2022 Buick Encore GX | Encore GX Service Manual N America 14739426 | Seats | Power Seats | Schematic and Routing Diagrams

Schematic and Routing Diagrams | Document ID: 5675239

8-Way Power Driver Seat (A2X)

B+ L
O
C
X51A
Fuse
F37DA Block - D
30A Instrument E
Panel S
F37A C

1640
RD/VT
X200 29

1640
RD/VT

X301 2
1640
RD/VT

E
S64D
Seat
Adjuster
Switch -
Driver

A K F J D C H G B

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286 287 282 283 285 284 276 277 450
L-GN/BN L-BU/VT YE GY/L-BU YE/L-BU GY/L-GN L-GN/YE L-BU/YE BK

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3 1 3 1 3 1 1 3
M50D M55D M51D M56D
Seat Front Seat Rear Seat Seat
M Vertical M Vertical M Horizontal M Recline
Motor - Motor - Motor - Motor -
Driver
n
Driver Driver Driver
ag

G300
i
rd
ca

© 2023 General Motors. All rights reserved.

2022 Buick Encore GX | Encore GX Service Manual N America 14739426 | Seats | Power Seats | Schematic and Routing Diagrams | Document ID: 5675242

8-Way Power Passenger Seat (A7M)

L
B+ O
C
X51A
Fuse D
F27DA Block - E
Instrument S
30A C
F27A Panel

1640
RD/VT

X204 33

1640
RD/VT

X302 2

1640
RD/VT
D
S64P
Seat
Adjuster
Switch -
Passenger

H A C F G E B

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297 298 296 290 288 289 550
GN/VT GN/BU YE/WH .c YE/BU GN/WH BU/WH BK

1 3 3 1 3 1
M50P M51P M55P
Seat Front Seat Seat Rear
M Vertical M Horizontal M Vertical
Motor -
n
Motor - Motor -
Passenger Passenger Passenger
ag

G301
i
rd
ca

© 2023 General Motors. All rights reserved.

2022 Buick Encore GX | | Seats | Seat Hardware, Trim, and Upholstery |
Encore GX Service Manual N America 14739426 Repair Instructions |
Document ID: 5223635

Driver or Passenger Seat Lumbar Support Replacement

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.c
Driver or Passenger Seat Lumbar Support Replacement

Callout Component Name

n
Preliminary Procedure
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Driver or Passenger Seat Back Cover and Pad Replacement

1 Driver or Passenger Seat Lumbar Support

i
rd
ca

© 2023 General Motors. All rights reserved.

4/26/23, 7:39 AM Driver Seat Adjuster Memory Module Replacement

2022 Buick Encore GX | | Seats |

Encore GX Service Manual N America 14739426 Power Seats | Repair Instructions |
Document ID: 5417404

Driver Seat Adjuster Memory Module Replacement

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.c
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Driver Seat Adjuster Memory Module Replacement
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Callout Component Name

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Preliminary Procedure
Remove the driver seat. Front Seat Removal and Installation
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Driver Seat Adjuster Memory Module Fastener [3x]

Caution: Refer to Fastener Caution.
1
Tighten
2.5 Y (22 lb in)

Driver Seat Adjuster Memory Module

Procedure

2 1. Disconnect all electrical connectors.

2. Perform the necessary programming and setup procedure: Control Module
References

© 2023 General Motors. All rights reserved.

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4/26/23, 7:42 AM Driver Seat Cushion Heater Replacement

2022 Buick Encore GX | | Seats |

Encore GX Service Manual N America 14739426 Seat Heating and Cooling |
Repair Instructions | Document ID: 5359039

Driver Seat Cushion Heater Replacement

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.c
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Driver Seat Cushion Heater Replacement
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Callout Component Name

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Warning: SIR Warning

Preliminary Procedure
Front Seat Cushion Cover and Pad Replacement
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Driver Seat Cushion Heater

Procedure

1. Carefully remove the cushion heater from cushion.

2. When installing the heater, glue on the heater starting on the rear side of the
cushion and fix it bit by bit moving forward.
1
Note: Separate the seat cushion heater mat from the seat cushion pad by pulling
the heater mat away from the pad. Use a heat gun to loosen the glue :
moving slowly from one end to the other, slowly peeling the heater mat up as
you go. This makes removal easier and ensures minimum damage to the
underlying foam. Be careful not to use overly high temperatures or hold the
heat gun in one place for too long as this can damage the foam.

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4/26/23, 7:40 AM Driver Seat Lumbar Control Switch Replacement

2022 Buick Encore GX | | Seats |

Encore GX Service Manual N America 14739426 Power Seats | Repair Instructions |
Document ID: 5359046

Driver Seat Lumbar Control Switch Replacement

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.c
gn
Driver Seat Lumbar Control Switch Replacement
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Callout Component Name

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Preliminary Procedure
Remove the driver side of front seat cushion outer finish cover. Front Seat Cushion Outer Finish
Cover Replacement
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Driver Seat Lumbar Control Switch

1 Procedure
Release the retaining tabs.

© 2023 General Motors. All rights reserved.

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 2022 Buick Encore GX | Encore GX Service Manual N America 14739426 | Seats | Document ID: 5675030

Driver Seat Schematics

Figure 1: 8-Way Power Driver Seat (A2X)
Figure 2: Module Power, Ground, Serial Data, and Memory Controls (A45)
Figure 3: Seat Adjuster Switch and Position Motors (A45)
Figure 4: Power Lumbar (AL9)

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n .c
i ag
rd
ca

© 2023 General Motors. All rights reserved.

4/26/23, 7:43 AM DTC B191A

2022 Buick Encore GX | | Seats | Seat Heating and Cooling |

Encore GX Service Manual N America 14739426
Diagnostic Information and Procedures | Document ID: 5135593

DTC B191A
Diagnostic Instructions

Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
Review Strategy Based Diagnosis for an overview of the diagnostic approach.
Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC B191A 39 Front Heated Seat Module

Circuit/System Description

An internal fault is detected inside the control module. No external circuits are involved

Conditions for Running the DTC

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Ignition ON.

Conditions for Setting the DTC

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The control module detects an internal fault.

Action Taken When the DTC Sets

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The seat heating control module will disable all heated seat functions.

Conditions for Clearing the DTC

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The DTC clears when the diagnostic runs and passes.

The history DTC will clear after 40 consecutive fault-free ignition cycles have occurred.
rd

Reference Information
Schematic Reference
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Heated/Cooled Seat Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Heated Seats Description and Operation

Electrical Information Reference

Circuit Testing
Connector Repairs
Testing for Intermittent Conditions and Poor Connections
Wiring Repairs

Scan Tool Reference

Control Module References for scan

© 2023 tool information
General Motors. All rights reserved.

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4/26/23, 7:43 AM DTC B191A

Circuit/System Verification

1. Ignition ON.
2. Verify DTC B191A is not set.
⇒ If the DTC is set
Replace the K29F Seat Heating Control Module – Front.
⇓ If the DTC is not set
3. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

Control Module References for K29F Seat Heating Control Module – Front replacement,
programming and setup

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.c
gn
ia
rd
ca

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4/26/23, 7:31 AM DTC B1405, B1825, B2355, B2365, or B2375

2022 Buick Encore GX | | Seats | Power Seats |

Encore GX Service Manual N America 14739426
Diagnostic Information and Procedures | Document ID: 5475560

DTC B1405, B1825, B2355, B2365, or B2375

Diagnostic Instructions

Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
Review Strategy Based Diagnosis for an overview of the diagnostic approach.
Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC B1405 Control Module Voltage Reference Output 2 Circuit

DTC B1825 Seat Recline Position Sensor Circuit

DTC B2355 Seat Front Vertical Position Sensor Circuit

DTC B2365 Seat Rear Vertical Position Sensor Circuit

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DTC B2375 Seat Assembly Horizontal Position Sensor Circuit

For symptom byte information refer to Symptom Byte List

Diagnostic Fault Information .c Short to Open/High Short to Signal

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Circuit Ground Resistance Voltage Performance

B1405 02,
B1825 06,
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B1825 06,
B2355 06,
12 V Reference B2355 06, — —
B2365 06,
B2365 06,
B2375 06
rd

B2375 06

B1825 01,
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Seat Front Vertical Position Sensor B2355 01,

B2355 06 B2355 06 B2355 5A
Signal B2365 01,
B2375 01

B1825 01,
Seat Rear Vertical Position Sensor B2355 01,
B2365 06 B2365 06 B2365 5A
Signal B2365 01,
B2375 01

B1825 01,
Seat Horizontal Position Sensor B2355 01,
B2375 06 B2375 06 B2375 5A
Signal B2365 01,
B2375 01

B1825 01,
B2355 01,
Seat Recline Position Sensor Signal B1825 06 B1825 06 B1825 5A
B2365 01,
B2375 01

© 2023 General Motors. All rights reserved.

Circuit Description
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4/26/23, 7:31 AM DTC B1405, B1825, B2355, B2365, or B2375
Circuit Description
The seat memory control module monitors the position of the seat motors by using hall effect
position sensors which are an internal part of each motor. The module supplies each sensor with a
12 V reference circuit only when any seat motor is active, and a low side signal circuit. During seat
motor operation, the hall effect position sensor provides a determined number of pulse signals for
every revolution of the motor shaft. The scan tool displays these pulse signals as counts that
range from 0–65,535. The module counts the feedback pulses from each sensor to determine seat
position and end of travel limits for each of the seat motors. High scan tool count values indicate
forward or upward seat positions while low count values indicate rearward or downward seat
positions.

Conditions for Running the DTC

Any seat motor must be active.

DTC B1325 must not be present.
Module battery voltage must be between 9–16 V.

Conditions for Setting the DTC

The seat memory control module does not detect position sensor movement or pulse signals while
the adjuster motor is active. The following conditions will set this DTC:

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B1405 02

The seat memory control module detects a short to ground or an open on the 12 V reference
circuit.

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B1825 01, B2355 01, B2365 01, or B2375 01

The seat memory control module detects a voltage greater than 5 V on the sensor signal circuit.
gn
B1825 06, B2355 06, B2365 06, or B2375 06

The seat memory control module detects a short to ground or an open on the sensor signal
circuit.
ia

Action Taken When the DTC Sets

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With a short to ground or an open circuit, the seat memory control module disables the
memory recall and easy exit/entry action commands of the motor monitored by the sensor.
The motor will respond to manual position commands.
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With a short to battery voltage, the seat memory control module disables the memory recall
and easy exit/entry action commands for all four seat motors. The motors will respond to
manual position commands.

Conditions for Clearing the DTC

The current DTC clears when the fault is no longer present and the power mode changes to
OFF then back to ACC or RUN.
The history DTC will clear after 40 consecutive fault-free ignition cycles have occurred.

Reference Information
Schematic Reference

Driver Seat Schematics

Connector End View Reference

Master Electrical Component List

Description and Operation

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4/26/23, 7:31 AM DTC B1405, B1825, B2355, B2365, or B2375

Memory Seats Description and Operation

Electrical Information Reference

Circuit Testing
Connector Repairs
Testing for Intermittent Conditions and Poor Connections
Wiring Repairs

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the appropriate driver seat motor listed
below for which the DTC set:
M50D Seat Front Vertical Motor – Driver
M55D Seat Rear Vertical Motor – Driver

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M51D Seat Horizontal Motor – Driver
M56D Seat Recline Motor – Driver
2. Ignition ON.
3. Test for greater than 10.8 V between the appropriate 12 V reference circuit terminal listed
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below and ground while pressing any power seat switch.
Front vertical motor – terminal 1
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Rear vertical motor – terminal 1
Horizontal motor – terminal 1
Recline motor – terminal 3
ia

⇒ If 10.8 V or less
3.1. Ignition OFF, disconnect the X5 harness connector at the K40D Seat Memory Control
rd

Module – Driver.
3.2. Test for infinite resistance between the 12 V reference circuit and ground.
⇒ If less than infinite resistance, repair the short to ground on the circuit.
ca

⇓ If infinite resistance
3.3. Test for less than 2 Ω in the 12 V reference circuit end to end.
⇒ If 2 Ω or greater, repair the open/high resistance in the circuit.
⇒ If less than 2 Ω, replace the K40D Seat Memory Control Module – Driver.
⇓ If greater than 10.8 V
4. Test for 0.2–2 V between the appropriate signal circuit terminal listed below and ground:
Front vertical motor – terminal 3
Rear vertical motor – terminal 3
Horizontal motor – terminal 3
Recline motor – terminal 1
⇒ If less than 0.2 V
4.1. Ignition OFF, disconnect the X5 harness connector at the K40D Seat Memory Control
Module – Driver.
4.2. Test for infinite resistance between the signal circuit and ground.
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4/26/23, 7:31 AM DTC B1405, B1825, B2355, B2365, or B2375

⇒ If less than infinite resistance, repair the short to ground on the circuit.
⇓ If infinite resistance
4.3. Test for less than 2 Ω in the signal circuit end to end.
⇒ If 2 Ω or greater, repair the open/high resistance in the circuit.
⇒ If less than 2 Ω, replace the K40D Seat Memory Control Module – Driver.
⇒ If greater than 2 V
4.1. Ignition OFF, disconnect the X5 harness connector at the K40D Seat Memory Control
Module – Driver, ignition ON.
4.2. Test for less than 1 V between each signal circuit listed below and ground:
Front vertical sensor terminal 12
Seat horizontal sensor terminal 11
Rear vertical sensor terminal 25
Seat recline sensor terminal 26
⇒ If 1 V or greater, repair the short to voltage on the circuit.
⇒ If less than 1 V, replace the K40D Seat Memory Control Module – Driver.

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⇓ If between 0.2–2 V
5. Test or replace the seat motor.

Repair Instructions

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Perform the Diagnostic Repair Verification after completing the repair.

Control Module References for K40D Seat Memory Control Module – Driver replacement,
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programming and setup
ia
rd
ca

© 2023 General Motors. All rights reserved.

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4/26/23, 7:31 AM DTC B1735, B1740, B1745, B1750, B1755, B1760, B1815, or B1820

2022 Buick Encore GX | | Seats | Power Seats |

Encore GX Service Manual N America 14739426
Diagnostic Information and Procedures | Document ID: 4750786

DTC B1735, B1740, B1745, B1750, B1755, B1760, B1815,

or B1820
Diagnostic Instructions

Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
Review Strategy Based Diagnosis for an overview of the diagnostic approach.
Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC B1735 Seat Front Up Switch Circuit

DTC B1740 Seat Front Down Switch Circuit

DTC B1745 Seat Rear Up Switch Circuit

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DTC B1750 Seat Rear Down Switch Circuit

DTC B1755 Seat Assembly Forward Switch Circuit

DTC B1760 Seat Assembly Rearward Switch Circuit

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DTC B1815 Seat Recline Forward Switch Circuit
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DTC B1820 Seat Recline Rearward Switch Circuit

For symptom byte information refer to Symptom Byte List

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Diagnostic Fault Information

Short to Open/High Short to Signal

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Circuit Ground Resistance Voltage Performance

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B1735 59,
B1740 59,
B1745 59,
B1750 59,
Front Vertical Up Switch Signal 1 — —
B1755 59,
B1760 59,
B1815 59,
B1820 59

B1735 59,
B1740 59,
B1745 59,
B1750 59,
Front Vertical Down Switch Signal 1 — —
B1755 59,
B1760 59,
B1815 59,
B1820 59

Rear Vertical Up Switch Signal B1735 59, 2 — —

B1740 59,
© 2023 General Motors. All rights reserved.

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4/26/23, 7:31 AM DTC B1735, B1740, B1745, B1750, B1755, B1760, B1815, or B1820

Short to Open/High Short to Signal

Circuit Ground Resistance Voltage Performance

B1745 59,
B1750 59,
B1755 59,
B1760 59,
B1815 59,
B1820 59

B1735 59,
B1740 59,
B1745 59,
B1750 59,
Rear Vertical Down Switch Signal 2 — —
B1755 59,
B1760 59,
B1815 59,
B1820 59

B1735 59,

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B1740 59,
B1745 59,
B1750 59,
Horizontal Forward Switch Signal 3 — —
B1755 59,
B1760 59,
.c B1815 59,
B1820 59
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B1735 59,
B1740 59,
B1745 59,
ia

B1750 59,
Horizontal Rearward Switch Signal 3 — —
B1755 59,
B1760 59,
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B1815 59,
B1820 59
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B1735 59,
B1740 59,
B1745 59,
B1750 59,
Recline Forward Switch Signal 4 — —
B1755 59,
B1760 59,
B1815 59,
B1820 59

B1735 59,
B1740 59,
B1745 59,
B1750 59,
Recline Rearward Switch Signal 4 — —
B1755 59,
B1760 59,
B1815 59,
B1820 59

1. The seat front vertical motor is inoperative

©motor
2. The seat rear vertical 2023 General Motors. All rights reserved.
is inoperative

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4/26/23, 7:31 AM DTC B1735, B1740, B1745, B1750, B1755, B1760, B1815, or B1820

Short to Open/High Short to Signal

Circuit Ground Resistance Voltage Performance

3. The seat horizontal motor is inoperative

4. The seat recline motor is inoperative

Circuit/System Description

The seat memory control module supplies a reference voltage to each signal circuit of the driver
seat adjuster switch. When the power seat switches are pressed, the appropriate signal circuit
from the seat memory control module is pulled low through the switch contacts indicating the
power seat command. The seat memory control module then commands the driver seat to move
in response to the switch signals.

Conditions for Running the DTC

DTC B1325 must not be present.

Module battery voltage must be between 9–16 V.

Conditions for Setting the DTC

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If a seat switch circuit is active in one direction and the switch for the opposite direction is
pressed, this DTC will set.
A short to ground on a switch signal circuit.

Action Taken When the DTC Sets .c

A motor output driven in response to a switch considered failed, is deactivated for both
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directions.
All memory recall commands are ignored.
The seat memory control module will respond to any other switch signal that has not set a
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DTC.

Conditions for Clearing the DTC

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The current DTC will clear and set the DTC to history, when the fault is no longer present
and the ignition is cycled OFF then back to ACC or RUN.
ca

The history DTC will clear after 40 consecutive fault-free ignition cycles have occurred.

Diagnostic Aids

If one of the switch signal circuits is shorted to ground, multiple DTCs will set.
If a switch is stuck in one direction and the switch is pressed in the opposite direction, a
single DTC will set.

Reference Information
Schematic Reference

Driver Seat Schematics

Connector End View Reference

Master Electrical Component List

Description and Operation

Memory Seats Description and Operation

© 2023 General Motors. All rights reserved.

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4/26/23, 7:31 AM DTC B1735, B1740, B1745, B1750, B1755, B1760, B1815, or B1820

Electrical Information Reference

Circuit Testing
Connector Repairs
Testing for Intermittent Conditions and Poor Connections
Wiring Repairs

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

1. Ignition ON.
2. Verify the scan tool seat switch parameters listed below change between Inactive and
Forward/Rearward or UP/Down when pressing the appropriate seat directional switch.
Driver Seat Cushion Front Vertical Switch
Driver Seat Cushion Rear Vertical Switch
Driver Seat Horizontal Switch

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Driver Seat Back Switch
⇒ If the parameter does not change
Refer to Circuit/System Testing.
⇓ If the parameter changes
3. All OK.
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Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the S64D Seat Adjuster Switch – Driver.
2. Verify that all scan tool driver seat switch parameters listed below are Inactive:
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Driver Seat Cushion Front Vertical Switch

Driver Seat Cushion Rear Vertical Switch
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Driver Seat Horizontal Switch

Driver Seat Back Switch
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⇒ If not Inactive
2.1. Ignition OFF, disconnect the X5 harness connector at the K40D Seat Memory Control
Module – Driver, ignition ON.
2.2. Test for infinite resistance between the appropriate signal circuit terminal listed below and
ground:
Front vertical up switch terminal A
Front vertical down switch terminal K
Rear vertical up switch terminal F
Rear vertical down switch terminal J
Horizontal forward switch terminal D
Horizontal rearward switch terminal C
Recline forward switch terminal H
Recline rearward switch terminal G
⇒ If less than infinite resistance, repair the short to ground on the circuit.
⇒ If infinite resistance,
© 2023replace the Motors.
General K40D Seat
All Memory Control Module – Driver.
rights reserved.

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4/26/23, 7:31 AM DTC B1735, B1740, B1745, B1750, B1755, B1760, B1815, or B1820

⇓ If Inactive
3. Install a 3 A fused jumper wire between the appropriate signal circuit terminal listed below and
the ground circuit terminal B.
Front vertical up switch terminal A
Front vertical down switch terminal K
Rear vertical up switch terminal F
Rear vertical down switch terminal J
Horizontal forward switch terminal D
Horizontal rearward switch terminal C
Recline forward switch terminal H
Recline rearward switch terminal G
4. Verify the appropriate scan tool seat switch parameter is Forward/Rearward or UP/Down.
⇒ If not Forward/Rearward or UP/Down
4.1. Ignition OFF, disconnect the X5 harness connector at the K40D Seat Memory Control
Module – Driver, ignition ON.

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4.2. Test for less than 1 V between the signal circuit terminal and ground.
⇒ If 1 V or greater, repair the short to voltage on the circuit.
⇓ If less than 1 V
4.3. Ignition OFF.
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4.4. Test for less than 2 Ω in the signal circuit end to end.
⇒ If 2 Ω or greater, repair the open/high resistance in the circuit.
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⇒ If less than 2 Ω, replace the K40D Seat Memory Control Module – Driver.
⇓ If Forward/Rearward or UP/Down
5. Test or replace the S64D Seat Adjuster Switch – Driver.
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Component Testing
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Seat Adjuster Switch Test

1. Ignition OFF, disconnect the harness connector at the S64D Seat Adjuster Switch – Driver.
ca

2. Test for infinite resistance between the ground terminal E and each signal terminal with the
switch in the open position.
⇒ If less than infinite resistance
Replace the S64D Seat Adjuster Switch – Driver.
⇓ If infinite resistance
3. Test for less than 2 Ω between the ground terminal E and each signal terminal with the
appropriate switch in the closed position.
⇒ If 2 Ω or greater
Replace the S64D Seat Adjuster Switch – Driver.
⇓ If less than 2 Ω
4. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

Control Module References for K40D Seat Memory Control Module – Driver replacement,
programming and setup © 2023 General Motors. All rights reserved.

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4/26/23, 7:31 AM DTC B1735, B1740, B1745, B1750, B1755, B1760, B1815, or B1820

om
.c
gn
ia
rd
ca

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4/26/23, 7:32 AM DTC B2755 or B2765

2022 Buick Encore GX | | Seats | Power Seats |

Encore GX Service Manual N America 14739426
Diagnostic Information and Procedures | Document ID: 4750788

DTC B2755 or B2765

Diagnostic Instructions

Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
Review Strategy Based Diagnosis for an overview of the diagnostic approach.
Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC B2755 Memory Select Switch Circuit

DTC B2765 Memory Set Switch Circuit

For symptom byte information refer to Symptom Byte List

Diagnostic Fault Information

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Short to Open/High Short to Signal
Circuit Ground Resistance Voltage Performance

Memory Seat Switch Signal 1 .c B2755 02 1 B2755 01

B2755 00 or
59
gn
B2765 02 or
Memory Seat Switch Set Signal 2 — —
59
ia

Low Reference — 1, 2 — —

1. Memory recall is inoperative

rd

2. Memory set is inoperative

ca

Circuit/System Description

Low reference is supplied to the driver seat memory switch from the seat memory control module.
When a memory switch is pressed, the signal circuit from the seat memory control module is
pulled low through the switch contacts and series of resistors indicating the memory recall
request. In response to this signal, the seat memory control module commands the appropriate
seat motors to move to the pre-recorded seat positions stored in memory.

Conditions for Running the DTC

DTC B1327 must not be present.

Battery voltage must be between 9–16 V.

Conditions for Setting the DTC

B2755 00 or 59

The seat memory control module detects a stuck Memory 1, Memory 2, or Exit switch for a given
amount of time.

B2755 01
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4/26/23, 7:32 AM DTC B2755 or B2765

If the seat memory control module detects a short to voltage on the memory seat switch signal
circuit this DTC will set.

B2755 02

If the seat memory control module detects a short to ground on the memory seat switch signal
circuit this DTC will set.

B2765 02 or 59

If the memory set switch signal is active for greater than 30 s, the module will set this DTC.

Actions Taken When the DTC Sets

Current and history DTCs are set.

All memory recall commands and are ignored.

Conditions for Clearing the DTCs

The DTC automatically clears when the switch circuit setting the DTC is no longer active.
A history DTC will clear once 50 consecutive fault-free ignition cycles have occurred.

om
Reference Information
Schematic Reference

Driver Seat Schematics

Connector End View Reference

Master Electrical Component List

.c
gn
Description and Operation

Memory Seats Description and Operation

ia

Electrical Information Reference

rd

Circuit Testing
Connector Repairs
ca

Testing for Intermittent Conditions and Poor Connections

Wiring Repairs

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

1. Ignition ON.
2. Verify the scan tool Seat Memory Control Module Memory Recall Switches parameter changes
between Inactive and Memory 1 when pressing the memory 1 switch.
⇒ If the parameter does not change
Refer to Circuit/System Testing.
⇓ If the parameter changes
3. Verify the scan tool Seat Memory Control Module Memory Recall Switches parameter changes
between Inactive and Memory 2 when pressing the memory 2 switch.
⇒ If the parameter does not change
© 2023
Refer to Circuit/System General Motors. All rights reserved.
Testing.

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4/26/23, 7:32 AM DTC B2755 or B2765

⇓ If the parameter changes

4. Verify the scan tool Memory Recall Switches parameter changes between Inactive and Exit
when pressing the EXIT switch.
⇒ If the parameter does not change
Refer to Circuit/System Testing.
⇓ If the parameter changes
5. Verify the scan tool Memory Recall Switches parameter changes between Inactive and Active
when pressing the SET switch.
⇒ If the parameter does not change
Refer to Circuit/System Testing.
⇓ If the parameter changes
6. All OK.

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the S47D Seat Memory Switch – Driver,
ignition ON.

om
2. Press a power seat switch in order to wake up the K40D Seat Memory Control Module – Driver.
3. Test for 9 V or greater between each signal circuit terminal listed below and ground:
Memory set switch signal terminal 5
Memory switch signal terminal 6
⇒ If less than 9 V
.c
3.1. Ignition OFF, disconnect the X6 harness connector at the K40D Seat Memory Control
gn
Module – Driver.
3.2. Test for infinite resistance between the signal circuit and ground.
⇒ If less than infinite resistance, repair the short to ground on the circuit.
ia

⇓ If infinite resistance
3.3. Test for less than 2 Ω in the signal circuit end to end.
rd

⇒ If 2 Ω or greater, repair the open/high resistance in the circuit.

⇒ If less than 2 Ω, replace the K40D Seat Memory Control Module – Driver.
ca

⇓ If 9 V or greater
4. Ignition OFF, disconnect the X6 harness connector at the K40D Seat Memory Control Module –
Driver, ignition ON.
5. Test for less than 1 V between each signal circuit terminal listed below and ground:
Memory set switch signal terminal 5
Memory switch signal terminal 6
⇒ If 1 V or greater
Repair the short to voltage on the circuit.
⇓ If less than 1 V
6. Test or replace the S47D Seat Memory Switch – Driver.

Component Testing
Driver Seat Memory Switch

1. Ignition OFF, disconnect the harness connector at the S47D Seat Memory Switch – Driver.
2. Test for infinite resistance between the low reference terminal 1 and each signal terminal listed
© 2023
below and with the switch in General
the openMotors. All rights reserved.
position.

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4/26/23, 7:32 AM DTC B2755 or B2765

Terminal 5
Terminal 6
⇒ If less than infinite resistance
Replace the S47D Seat Memory Switch – Driver.
⇓ If infinite resistance
3. Test for less than 4 Ω between the signal terminal 5 and the low reference terminal 1 while
pressing the Memory SET button.
⇒ If 4 Ω or greater
Replace the S47D Seat Memory Switch – Driver.
⇓ If less than 4 Ω
4. Test for 573–701 Ω between the signal terminal 6 and the low reference terminal 1 while
pressing the Memory 1 button.
⇒ If not between 573–701 Ω
Replace the S47D Seat Memory Switch – Driver.
⇓ If between 573–701 Ω
5. Test for 1800–2201 Ω between the signal terminal 6 and the low reference terminal 1 while

om
pressing the Memory 2 button.
⇒ If not between 1800–2201 Ω
Replace the S47D Seat Memory Switch – Driver.
⇓ If between 1800–2201 Ω
.c
6. Test for 5.52k–6.73 kΩ between the signal terminal 6 and the low reference terminal 1 while
pressing the Exit button.
gn
⇒ If not between 5.52k–6.73 kΩ
Replace the S47D Seat Memory Switch – Driver.
⇓ If between 5.52k–6.73 kΩ
ia

7. All OK.
rd

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

ca

Front Seat Adjuster Memory Switch Replacement

Control Module References for K40D Seat Memory Control Module – Driver replacement,
programming, and setup

© 2023 General Motors. All rights reserved.

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4/26/23, 7:32 AM DTC B3920

2022 Buick Encore GX | | Seats | Power Seats |

Encore GX Service Manual N America 14739426
Diagnostic Information and Procedures | Document ID: 5475562

DTC B3920
Diagnostic Instructions

Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
Review Strategy Based Diagnosis for an overview of the diagnostic approach.
Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC B3920 00 Seat Motors Group 1 Common Circuit

For symptom byte information refer to Symptom Byte List

Diagnostic Fault Information

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Short to Open/High Short to Signal
Circuit Ground Resistance Voltage Performance

Seat Front Vertical Motor Down B3920 00,

B3920 02 1 B3920 01
Control B3920 0B

Seat Front Vertical Motor Up

Control
.c B3920 02 1 B3920 01
B3920 00,
B3920 0B
gn
Seat Horizontal Motor Forward B3920 00,
B3920 02 2 B3920 01
Control B3920 0B
ia

Seat Horizontal Motor Rearward B3920 00,

B3920 02 2 B3920 01
Control B3920 0B
rd

Seat Rear Vertical Motor Down B3920 00,

B3920 02 3 B3920 01
ca

Control B3920 0B

Seat Rear Vertical Motor Up B3920 00,

B3920 02 3 B3920 01
Control B3920 0B

Seat Recline Motor Forward B3920 00,

B3920 02 4 B3920 01
Control B3920 0B

Seat Recline Motor Rearward B3920 00,

B3920 02 4 B3920 01
Control B3920 0B

1. The seat front vertical motor is inoperative

2. The seat horizontal motor is inoperative
3. The seat rear vertical motor is inoperative
4. The seat recline motor is inoperative

Circuit/System Description

© 2023 General Motors. All rights reserved.

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4/26/23, 7:32 AM DTC B3920

The seat memory control module controls the seat motors via half bridges that are connected to
power rails internal to the module. The seat memory control module connects all of the motor
control circuits on each power rail to a common reference point whenever they are not in
operation. The module monitors all seat motor control circuits for a shorted to ground or voltage
before enabling any seat motor.

When a power seat switch is pressed or when a memory recall is requested, each seat motor
receives battery voltage and ground from the seat memory control module via the motor control
circuits. All motors are reversible, so the direction the motor rotates depends on which control
circuit voltage is applied and which control circuit ground is applied. When the switch is operated
in the opposite direction, the module reverses the polarity and applies voltage and ground to the
opposite circuits to move the seat in the opposite direction.

Conditions for Running the DTC

DTC B1325 must not be present.

Module battery voltage must be between 9–16 V.

Conditions for Setting the DTC

B3920 00

om
Current out of the module does not match the current returning to the module from 1.5–5 A.

B3920 01

The voltage on any power rail 1 motor control circuit exceeds 2.78 V for 100 ms.

B3920 02
.c
gn
The voltage on any power rail 1 motor control circuit is below 1.47 V for 100 ms.

B3920 0B
ia

The differential current measured through the high and low side of the power rail is within
tolerance of each other, but the absolute current or an over-current has exceeded the maximum
value.
rd

Action Taken When the DTC Sets

The seat memory control module will not allow operation of any motor on the power rail for which
ca

the DTC was set.

Conditions for Clearing the DTC

The current DTC clears when the fault is no longer present and the power mode changes to
OFF then back to ACC or RUN.
The history DTC will clear after 40 consecutive fault-free ignition cycles have occurred.

Reference Information
Schematic Reference

Driver Seat Schematics

Connector End View Reference

Master Electrical Component List

Description and Operation

Memory Seats Description and Operation

© 2023 General Motors. All rights reserved.

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4/26/23, 7:32 AM DTC B3920

Electrical Information Reference

Circuit Testing
Connector Repairs
Testing for Intermittent Conditions and Poor Connections
Wiring Repairs

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Testing
B3920 01 or B3920 02

1. Ignition OFF, disconnect the X3 connector at the K40D Seat Memory Control Module – Driver.
2. Test for infinite resistance between each control circuit terminal listed below and ground:
Front vertical motor up control terminal 3
Front vertical motor down control terminal 4

om
Rear vertical motor up control terminal 5
Rear vertical motor down control terminal 6
Horizontal motor forward control terminal 11
Horizontal motor rearward control terminal 12
.c
Recline motor forward control terminal 1
Recline motor rearward control terminal 2
gn
⇒ If less than infinite resistance
Repair the short to ground on the circuit.
⇓ If infinite resistance
ia

3. Ignition ON.
4. Test for less than 1 V between each control circuit terminal listed below and ground:
rd

Front vertical motor up control terminal 3

Front vertical motor down control terminal 4
ca

Rear vertical motor up control terminal 5

Rear vertical motor down control terminal 6
Horizontal motor forward control terminal 11
Horizontal motor rearward control terminal 12
Recline motor forward control terminal 1
Recline motor rearward control terminal 2
⇒ If 1 V or greater
Repair the short to voltage on the circuit.
⇓ If less than 1 V
5. Replace the K40D Seat Memory Control Module – Driver.

B3920 00 or B3920 0B

1. Ignition ON.
2. Clear the current and history DTC.

© 2023 General Motors. All rights reserved.

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4/26/23, 7:32 AM DTC B3920

3. Determine which motor set this DTC by operating the driver seat motors listed below one at a
time in both directions. Check for the DTC to set between each motor test.
M50D Seat Front Vertical Motor – Driver
M55D Seat Rear Vertical Motor – Driver
M51D Seat Horizontal Motor – Driver
M56D Seat Recline Motor – Driver
4. Ignition OFF, disconnect the harness connector at the motor for which the DTC set, ignition
ON.
5. Clear the DTC.
6. Verify that DTC B3920 00 or B3920 0B does not set while operating the appropriate seat motor
adjuster switch in both directions.
⇒ If DTC B3920 00 or B3920 0B sets
6.1. Ignition OFF, disconnect the X3 harness connector at the K40D Seat Memory Control
Module – Driver.
6.2. Test for infinite resistance between the control circuits.
⇒ If less than infinite resistance, repair the short between the circuits.

om
⇓ If infinite resistance
6.3. Test for less than 2 Ω in each control circuit end to end.
⇒ If 2 Ω or greater, repair the open/high resistance in the circuit.

.c
⇒ If less than 2 Ω, replace the K40D Seat Memory Control Module – Driver.
⇓ If DTC B3920 00 or B3920 0B does not set
gn
7. Replace the appropriate seat motor.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

ia

Control Module References for K40D Seat Memory Control Module – Driver replacement,
programming and setup
rd
ca

© 2023 General Motors. All rights reserved.

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 2022 Buick Encore GX | | Seats | Seat Hardware, Trim, and Upholstery |
Encore GX Service Manual N America 14739426 Specifications |
Document ID: 5360635

Fastener Specifications
Reusable Threaded Fastener Tightening Specifications

Note: All fasteners listed in this table can be reused after removal.

Specification

Application Metric (English)

Driver or Passenger Seat Adjuster Finish Cover Screw 3 Y (27 lb in)

Driver or Passenger Seat Back Frame Fastener 35 Y (26 lb ft)

Driver or Passenger Seat Inner Recliner Finish Cover

2.5 Y (22 lb in)
Fastener

Front Seat Adjuster Finish Cover Retainer Bolt 4 Y (35 lb in)

Front Seat Adjuster Handle Fastener 2.5 Y (22 lb in)

om
Front Seat Back Frame Dampener Nut 10 Y (89 lb in)

Front Seat Bolt 43 Y (32 lb ft)

.c
Front Seat Cushion Outer Finish Cover Fastener 2.5 Y (22 lb in)
n
ag

Front Seat Inner Recliner Inner Finish Cover Bolt 4 Y (35 lb in)

Front Seat Outer Recliner Inner Finish Cover Bolt 4 Y (35 lb in)
i
rd

Front Seat Vertical Actuator Lever Fastener 2.5 Y (22 lb in)

Rear Seat Armrest Bracket Bolt 10 Y (89 lb in)

ca

Rear Seat Back Latch Bolt 45 Y (33 lb ft)

Rear Seat Back Outer Pivot Bolt 45 Y (33 lb ft)

Rear Seat Bolster Frame Bolt 9 Y (80 lb in)

© 2023 General Motors. All rights reserved.

 2022 Buick Encore GX | | Seats |
Encore GX Service Manual N America 14739426 Seat Heating and Cooling | Specifications |
Document ID: 5360637

Fastener Specifications
Reusable Threaded Fastener Tightening Specifications

Note: All fasteners listed in this table can be reused after removal.

Specification

Application Metric (English)

Front Seat Heater Control Module Bracket Bolt 2.5 Y (22 lb in)

Front Seat Heater Vent Control Hardware Module Bolt 2.5 Y (22 lb in)

om
n .c
i ag
rd
ca

© 2023 General Motors. All rights reserved.

 2022 Buick Encore GX | Encore GX Service Manual N America 14739426 | Seats | Power Seats | Specifications |
Document ID: 5360633

Fastener Specifications
Reusable Threaded Fastener Tightening Specifications

Note: All fasteners listed in this table can be reused after removal.

Specification

Application Metric (English)

Front Seat Adjuster Memory Module Bracket Bolt 4 Y (35 lb in)

Front Seat Tilt Adjuster Actuator Bolt 8 Y (71 lb in)

om
n .c
i ag
rd
ca

© 2023 General Motors. All rights reserved.

4/26/23, 7:43 AM Front Heated Seat Malfunction

2022 Buick Encore GX | | Seats | Seat Heating and Cooling |

Encore GX Service Manual N America 14739426
Diagnostic Information and Procedures | Document ID: 5135594

Front Heated Seat Malfunction

Diagnostic Instructions

Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
Review Strategy Based Diagnosis for an overview of the diagnostic approach.
Diagnostic Procedure Instructions provides an overview of each diagnostic category.

Diagnostic Fault Information

Short to Open/High Short to Signal

Circuit Ground Resistance Voltage Performance

B+ Terminal 10 X1 U1524, 1 U1524, 1 — —

om
B+ Terminal 7 X1 6 6 — —

Driver Heated Seat Back

2 5 5 —
Temperature Sensor Signal

Driver Heated Seat Back

Temperature Sensor Low Reference
.c — 5 — —
gn
Driver Heated Seat Element
1 2 1 —
Voltage Control Terminal 6 X1
ia

Driver Heated Seat Element

1 2 1 —
Ground Control Terminal 4 X1
rd

Driver Heated Seat Back Element

1 3 1 —
Voltage Control
ca

Driver Heated Seat Back Element

1 3 1 —
Ground Control

Driver Heated Seat Cushion

2 5 5 —
Temperature Sensor Signal

Driver Heated Seat Cushion

— 5 — —
Temperature Sensor Low Reference

Driver Heated Seat Cushion

1 4 1 —
Element Voltage Control

Driver Heated Seat Cushion

1 4 1 —
Element Ground Control

Passenger Heated Seat Back

6 9 9 —
Temperature Sensor Signal
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4/26/23, 7:43 AM Front Heated Seat Malfunction

Short to Open/High Short to Signal

Circuit Ground Resistance Voltage Performance

Passenger Heated Seat Back

— 9 — —
Temperature Sensor Low Reference

Passenger Heated Seat Element

1 6 1 —
Voltage Control Terminal 2 X1

Passenger Heated Seat Element

1 6 1 —
Ground Control Terminal 3 X1

Passenger Heated Seat Back

1 7 1 —
Element Voltage Control

Passenger Heated Seat Back

1 7 1 —
Element Ground Control

om
Passenger Heated Seat Cushion
6 9 9 —
Temperature Sensor Signal

Passenger Heated Seat Cushion

— 9 — —
Temperature Sensor Low Reference

Passenger Heated Seat Cushion

.c 1 8 1 —
gn
Element voltage Control

Passenger Heated Seat Cushion

1 8 1 —
Element Ground Control
ia

Front Seat Heating Control Module

— U1524, 1 — —
rd

Ground

1. Driver and passenger heated seats are inoperative.

ca

2. Driver heated seat is inoperative

3. Driver seat back heat function is inoperative
4. Driver seat cushion heat function is inoperative
5. Degraded driver heated seat operation
6. Passenger heated seat is inoperative
7. Passenger seat back heat function is inoperative
8. Passenger seat cushion heat function is inoperative
9. Degraded passenger heated seat operation

Circuit/System Description

The driver and passenger heated seats switches are located with the HVAC controls. When a
heated seat switch is pressed, a serial data message is sent from the HVAC controls to the body
control module (BCM) indicating the heated seat command. The BCM serves as the heated seat
system master to determine the requested operating mode. The BCM then sends a LIN bus serial
data message to the seat heating control module indicating the heated seat command. In
response to this message, the seat heating control module attempts to drive the appropriate seat
heating elements per the BCM command. The BCM also controls the seat temperature and mode
© 2023 General Motors. All rights reserved.

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4/26/23, 7:43 AM Front Heated Seat Malfunction

indicators, via the serial data line, used to provide the operator with feedback as to the operating
status of the system.

The seat heating control module controls heated seat operation for the driver and passenger
seats. When active, power is applied to the seat cushion and back heater elements through a
common pulse width modulated (PWM) voltage supply control circuit. Each individual heater
element is switched to ground by the module through a common low side drive control circuit.

The seat back and cushion temperature sensors (thermistors) are packaged with the seat heating
elements located just under the seat covers. The seat heating control module supplies each
temperature sensor with a 5 V reference signal circuit and a low reference circuit. The module
monitors the voltage from the signal circuit to determine the temperature of the seat.

The temperature sensor varies in resistance based on the temperature of the heating element
causing the signal voltage to change. Once the module senses the seat reached the set
temperature, it will then begin regulate the current flow through the heater elements in order to
maintain the desired seat temperature based on the feedback voltage from the sensor.

Diagnostic Aids

A short to ground or B+ in either the heating element voltage control circuit or ground
control circuit will cause both the driver and front passenger heated seats to be inoperative.

om
An open in either the voltage control circuit or ground control circuit between the module
and the splice will cause the seat cushion and seat back the heated seat function to be
inoperative for that seat.
A short to ground on either the seat cushion or seat back temperature sensor signal circuit
.c
will cause the heated seat function to be inoperative for that seat.
An open in either the voltage control circuit or ground control circuit between the splice and
gn
the heating element will cause just that one heating element to be inoperative.
The following faults will cause a degraded heated seat operation for both the seat back and
seat cushion.
ia

– An open or a short to voltage on either the seat cushion or seat back temperature sensor
signal circuit.
– An open in either the seat cushion or seat back temperature sensor low reference circuit.
rd

– A fault in either the seat cushion or seat back temperature sensor.

A broken wire in a heating element may cause a degraded heated seat operation for that
ca

particular heating element.

When inactive the seat heating control module connects the heating element low side
outputs to a common reference point internal to the module which is biased to
approximately 3.5 V. The module uses this biased voltage in order to check the high side
and low side control circuits for a short to battery or ground before enabling the driver and
passenger seat heating elements.
With both the seat cushion and seat back heater elements disconnected, if the high side
output of the module is measured it will display a low current bleed off voltage between
3.4–12 V. This bleed off voltage does not have a meaningful diagnostic purpose. With one or
both of the heater elements connected you would just see the 3.5 V biased voltage from this
circuit.
If the heated seats are on high, the temperature level may automatically be lowered after
approximately 30 min of operation.
Heated seat operation may be inhibited if the vehicle was in an accident. To restore
operation of the heated seats, it may be necessary to reset crash data in the supplemental
restraint module. This is done by performing the reset disable request after crash event
detected under configuration/reset functions in GDS 2.

Reference Information
© 2023 General Motors. All rights reserved.

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4/26/23, 7:43 AM Front Heated Seat Malfunction

Schematic Reference

Heated/Cooled Seat Schematics

Description and Operation

Heated Seats Description and Operation

Electrical Information Reference

Circuit Testing
Connector Repairs
Testing for Intermittent Conditions and Poor Connections
Wiring Repairs

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

om
Note: Review the Diagnostic Fault Information table and Diagnostic Aids in order to get a better
understanding of the possible heated seat system faults before proceeding Circuit/System
Verification and Circuit/System Testing.

1. Verify DTC B0052 is not set.

⇒ If the DTC is set
Refer to DTC B0052
.c
gn
⇓ If the DTC is not set
2. Engine ON.
3. Verify the scan tool Body Control Module Driver Seat Heating/Venting/Cooling Mode parameter
ia

changes state when pressing the driver heated seat switch.

⇒ If the parameter does not change
rd

Replace the A26 HVAC Controls.

⇓ If the parameter changes
ca

4. Verify the scan tool Passenger Seat Heating/Venting/Cooling Mode parameter changes state
when pressing the passenger heated seat switch.
⇒ If the parameter does not change
Replace the A26 HVAC Controls.
⇓ If the parameter changes
5. Verify the driver and front passenger heated seats operate.
⇒ If the driver and passenger heated seats are inoperative
Refer to Circuit/System Testing – Both Heated Seats are Inoperative
⇒ If the seat cushion and back heating elements are inoperative of one seat
Refer to Circuit/System Testing – One Heated Seat Inoperative
⇒ If just one of the heating elements is inoperative
Refer to Circuit/System Testing – One Heating Element is Inoperative.
⇒ If the driver seat exhibits a degraded heated seat operation
Refer to Circuit/System Testing – Degraded Heated Seat Operation Driver Seat
⇒ If the passenger seat exhibits a degraded heated seat operation
Refer to Circuit/System Testing
© 2023 – Degraded
General Motors.Heated Seatreserved.
All rights Operation Passenger Seat

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4/26/23, 7:43 AM Front Heated Seat Malfunction

⇓ If both heated seats operate

6. All OK.

Circuit/System Testing
Both Heated Seats are Inoperative

Note: Circuit/System Verification must be performed before proceeding with Circuit/System

Testing.
1. Ignition OFF, disconnect the X1 harness connector at the K29F Seat Heating Control Module –
Front, ignition ON.
2. Verify a test lamp illuminates between the B+ circuit terminal 7 and ground.
⇒ If the test lamp does not illuminate and the circuit fuse is good
2.1. Ignition OFF, remove the test lamp.
2.2. Test for less than 2 Ω in the B+ circuit end to end.
⇒ If 2 Ω or greater, repair the open/high resistance in the circuit.
⇒ If less than 2 Ω, verify the fuse is OK and there is voltage at the fuse.
⇒ If the test lamp does not illuminate and the circuit fuse is open

om
2.1. Ignition OFF, remove the test lamp.
2.2. Test for infinite resistance between the B+ circuit and ground.
⇒ If less than infinite resistance, repair the short to ground on the circuit.
⇒ If infinite resistance, replace the K29F Seat Heating Control Module – Front.
⇓ If the test lamp illuminates
.c
gn
3. Ignition OFF.
4. Test for infinite resistance between each control circuit terminal listed below and ground, one
at a time.
ia

Terminal 2
Terminal 6
rd

⇒ If less than infinite resistance

Repair the short to ground on the circuit.
⇓ If infinite resistance
ca

5. Ignition ON.
6. Test for less than 1 V between each control circuit terminal listed below and ground, one at a
time.
Terminal 2
Terminal 6
⇒ If 1 V or greater
Repair the short to voltage on the circuit.
⇓ If less than 1 V
7. Replace the K29F Seat Heating Control Module – Front.

One Heated Seat is Inoperative

Note: Circuit/System Verification must be performed before proceeding with Circuit/System

Testing
1. Ignition OFF, disconnect the X1 harness connector at the K29F Seat Heating Control Module –
Front, ignition ON.
2. Verify a test lamp illuminates between the B+ circuit terminal 7 and ground.
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4/26/23, 7:43 AM Front Heated Seat Malfunction

⇒ If the test lamp does not illuminate and the circuit fuse is good
2.1. Ignition OFF, remove the test lamp
2.2. Test for less than 2 Ω in the B+ circuit end to end.
⇒ If 2 Ω or greater, repair the open/high resistance in the circuit.
⇒ If less than 2 Ω, verify the fuse is not open and there is voltage at the fuse.
⇒ If the test lamp does not illuminate and the circuit fuse is open
2.1. Ignition OFF, remove the test lamp.
2.2. Test for infinite resistance between the B+ circuit and ground.
⇒ If less than infinite resistance, repair the short to ground on the circuit.
⇒ If infinite resistance, replace the K29F Seat Heating Control Module – Front.
⇓ If the test lamp illuminates
3. Ignition OFF, connect the X1 harness connector at the K29F Seat Heating Control Module –
Front. Disconnect the harness connector at the E14 Seat Heating Element – Cushion and the
E14 Seat Heating Element – Back, ignition ON.
Note: When performing this test ensure that you are testing from the correct terminal.
Testing from the incorrect terminal will cause a misdiagnosis of the circuit. Three of the

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four terminals in this connector will not only display a voltage reading but a different
voltage reading.
4. Test for 4.8–5.2 V between each signal circuit terminal listed below and ground, one at a time.
E14 Seat Heating Element – Cushion terminal 2
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E14 Seat Heating Element – Back terminal 2
⇒ If less than 4.8 V
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4.1. Ignition OFF, disconnect the X2 harness connector at the K29F Seat Heating Control
Module – Front.
4.2. Test for infinite resistance between the signal circuit and ground.
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⇒ If less than infinite resistance, repair the short to ground on the circuit.
⇓ If infinite resistance
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4.3. Test for less than 2 Ω in the signal circuit end to end.
⇒ If 2 Ω or greater, repair the open/high resistance in the circuit.
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⇒ If less than 2 Ω, replace the K29F Seat Heating Control Module – Front.
⇒ If greater than 5.2 V
4.1. Ignition OFF, disconnect the X2 harness connector at the K29F Seat Heating Control
Module – Front, ignition ON.
4.2. Test for less than 1 V between the signal circuit and ground.
⇒ If 1 V or greater, repair the short to voltage on the circuit.
⇒ If less than 1 V, replace the K29F Seat Heating Control Module – Front.
⇓ If between 4.8–5.2 V
5. Connect a test lamp between control circuit terminal 1 and control circuit terminal 4 of the E14
Seat Heating Element – Back, engine ON.
6. Verify the test lamp turns ON after pressing the heated seat switch.
⇒ If the test lamp is always OFF
6.1. Ignition OFF, remove the test lamp, disconnect the X1 harness connector at the K29F
Seat Heating Control Module – Front.
6.2. Test for less than 2 Ω in each control circuit end to end.
© 2023 General Motors. All rights reserved.

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4/26/23, 7:43 AM Front Heated Seat Malfunction

⇒ If 2 Ω or greater, repair the open/high resistance in the circuit.

⇒ If less than 2 Ω, replace the K29F Seat Heating Control Module – Front.
⇓ If the test lamp turns ON
7. Ignition OFF, connect the harness connector at the E14 Seat Heating Element – Cushion,
engine ON.
8. Verify the test lamp turns ON after pressing the heated seat switch.
⇒ If the test lamp is always OFF
Note: Because of the type of material used in the heater element, a reliable resistance value
is unavailable for a component test.
Test or replace the E14 Seat Heating Element – Cushion.
⇓ If the test lamp turns ON
Note: Because of the type of material used in the heater element, a reliable resistance value
is unavailable for a component test.
9. Test or replace the E14 Seat Heating Element – Back.

One Heating Element is Inoperative

Note: Circuit/System Verification must be performed before proceeding with Circuit/System

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Testing.
1. Ignition OFF, disconnect the harness connector at the appropriate E14 Seat Heating Element.
2. Connect a test lamp between control circuit terminal 1 and control circuit terminal 4, engine
ON.
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3. Verify the test lamp turns ON after pressing the heated seat switch.
⇒ If the test lamp is always OFF
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3.1. Ignition OFF, remove the test lamp, disconnect the X1 harness connector at the K29F
Seat Heating Control Module – Front.
3.2. Test for less than 2 Ω in each control circuit end to end.
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⇒ If 2 Ω or greater, repair the open/high resistance in the circuit.

⇓ If the test lamp turns ON
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Note: Because of the type of material used in the heater element, a reliable resistance value
is unavailable for a component test.
4. Test or replace the E14 Seat heating Element.
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Degraded Heated Seat Operation Driver Seat

Note: Circuit/System Verification must be performed before proceeding with Circuit/System

Testing
1. Ignition OFF, disconnect the harness connector at each component listed below. It may take
up to 2 min for all vehicle systems to power down.
E14B Seat Heating Element – Driver Cushion
E14A Seat Heating Element – Driver Back
2. Test for less than 40 Ω between each low reference circuit terminal listed below and ground,
one at a time.
E14B Seat Heating Element – Driver Cushion terminal 3
E14A Seat Heating Element – Driver Back terminal 3
⇒ If 40 Ω or greater
2.1. Ignition OFF, disconnect the X2 harness connector at the K29F Seat Heating Control
Module – Front.
2.2. Test for less than 2 Ω in the low reference circuit end to end.
© 2023 General Motors. All rights reserved.

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4/26/23, 7:43 AM Front Heated Seat Malfunction

⇒ If 2 Ω or greater, repair the open/high resistance in the circuit.

⇒ If less than 2 Ω, replace the K29F Seat Heating Control Module – Front.
⇓ If less than 40 Ω
3. Ignition ON.
4. Test for 4.8–5.2 V between each signal circuit terminal listed below and ground, one at a time.
E14B Seat Heating Element – Driver Cushion terminal 2
E14A Seat Heating Element – Driver Back terminal 2
⇒ If less than 4.8 V
4.1. Ignition OFF, disconnect the X2 harness connector at the K29F Seat Heating Control
Module – Front.
4.2. Test for infinite resistance between the signal circuit and ground.
⇒ If less than infinite resistance, repair the short to ground on the circuit.
⇓ If infinite resistance
4.3. Test for less than 2 Ω in the signal circuit end to end.
⇒ If 2 Ω or greater, repair the open/high resistance in the circuit.

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⇒ If less than 2 Ω, replace the K29F Seat Heating Control Module – Front.
⇒ If greater than 5.2 V
4.1. Ignition OFF, disconnect the X2 harness connector at the K29F Seat Heating Control
Module – Front, ignition ON.
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4.2. Test for less than 1 V between the signal circuit and ground.
⇒ If 1 V or greater, repair the short to voltage on the circuit.
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⇒ If less than 1 V, replace the K29F Seat Heating Control Module – Front.
⇓ If between 4.8–5.2 V
5. Ignition OFF, connect the harness connector at the E14B Seat Heating Element – Driver
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Cushion and the E14A Seat Heating Element – Driver Back. Disconnect the X2 harness
connector at the K29F Seat Heating Control Module – Front.
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6. Test for 500 Ω–300 kΩ between the signal circuit and the low reference circuit terminals listed
below, one at a time.
E14B Seat Heating Element – Driver Cushion terminal 6 and terminal 1
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E14A Seat Heating Element – Driver Back terminal 3 and terminal 11

⇒ If not between 500 Ω–300 kΩ
Replace the E14 Seat Heating Element.
⇓ If between 500 Ω–300 kΩ
7. Replace the K29F Seat Heating Control Module – Front.

Degraded Heated Seat Operation Passenger Seat

Note: Circuit/System Verification must be performed before proceeding with Circuit/System

Testing
1. Ignition OFF, disconnect the harness connector at each component listed below. It may take
up to 2 min for all vehicle systems to power down.
E14D Seat Heating Element – Passenger Cushion
E14C Seat Heating Element – Passenger Back
2. Test for less than 40 Ω between each low reference circuit terminal listed below and ground,
one at a time.
E14D Seat Heating Element – Passenger Cushion terminal 3
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4/26/23, 7:43 AM Front Heated Seat Malfunction

E14C Seat Heating Element – Passenger Back terminal 3

⇒ If 40 Ω or greater
2.1. Ignition OFF, disconnect the X2 harness connector at the K29F Seat Heating Control
Module – Front.
2.2. Test for less than 2 Ω in the low reference circuit end to end.
⇒ If 2 Ω or greater, repair the open/high resistance in the circuit.
⇒ If less than 2 Ω, replace the K29F Seat Heating Control Module – Front.
⇓ If less than 40 Ω
3. Ignition ON.
4. Test for 4.8–5.2 V between each signal circuit terminal listed below and ground, one at a time.
E14D Seat Heating Element – Passenger Cushion terminal 2
E14C Seat Heating Element – Passenger Back terminal 2
⇒ If less than 4.8 V
4.1. Ignition OFF, disconnect the X2 harness connector at the K29F Seat Heating Control
Module – Front.
4.2. Test for infinite resistance between the signal circuit and ground.

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⇒ If less than infinite resistance, repair the short to ground on the circuit.
⇓ If infinite resistance
4.3. Test for less than 2 Ω in the signal circuit end to end.
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⇒ If 2 Ω or greater, repair the open/high resistance in the circuit.
⇒ If less than 2 Ω, replace the K29F Seat Heating Control Module – Front.
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⇒ If greater than 5.2 V
4.1. Ignition OFF, disconnect the X2 harness connector at the K29F Seat Heating Control
Module – Front, ignition ON.
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4.2. Test for less than 1 V between the signal circuit and ground.
⇒ If 1 V or greater, repair the short to voltage on the circuit.
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⇒ If less than 1 V, replace the K29F Seat Heating Control Module – Front.
⇓ If between 4.8–5.2 V
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5. Ignition OFF, connect the harness connector at the E14D Seat Heating Element – Passenger
Cushion and the E14C Seat Heating Element – Passenger Back. Disconnect the X2 harness
connector at the K29F Seat Heating Control Module – Front.
6. Test for 500 Ω–300 kΩ between the signal circuit and the low reference circuit terminals listed
below, one at a time.
E14D Seat Heating Element – Passenger Cushion terminal 5 and terminal 2
E14C Seat Heating Element – Passenger Back terminal 4 and terminal 12
⇒ If not between 500 Ω–300 kΩ
Replace the E14 Seat Heating Element.
⇓ If between 500 Ω–300 kΩ
7. Replace the K29F Seat Heating Control Module – Front.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

Control Module References for K29F Seat Heating Control Module – Front replacement,
programming and setup
© 2023 General Motors. All rights reserved.

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4/26/23, 7:43 AM Front Heated Seat Malfunction

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2022 Buick Encore GX | | Seats | Seat Hardware, Trim, and Upholstery |
Encore GX Service Manual N America 14739426 Repair Instructions |
Document ID: 5219232

Front Seat Adjuster Finish Cover Replacement

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Driver or Passenger Seat Adjuster Finish Cover Replacement

Callout Component Name

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Driver or Passenger Seat Adjuster Finish Cover Screw
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Caution: Fastener Caution

1
Tighten
3 Y (27 lb in)
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2 Driver or Passenger Seat Adjuster Finish Cover

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© 2023 General Motors. All rights reserved.

2022 Buick Encore GX | | Seats | Seat Hardware, Trim, and Upholstery |
Encore GX Service Manual N America 14739426 Repair Instructions |
Document ID: 5438927

Front Seat Adjuster Finish Cover Retainer Replacement

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Driver or Passenger Seat Adjuster Finish Cover Retainer Replacement
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Callout Component Name
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Preliminary Procedure
Front Seat Cushion Outer Finish Cover Replacement
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Front Seat Adjuster Finish Cover Retainer Bolt [2x]

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Caution: Refer to Fastener Caution.

1
Tighten
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4 Y (35 lb in)

2 Driver or Passenger Seat Adjuster Finish Cover Retainer

© 2023 General Motors. All rights reserved.

 2022 Buick Encore GX | | Seats |
Encore GX Service Manual N America 14739426 Seat Hardware, Trim, and Upholstery |
Document ID: 5220137

Front Seat Adjuster Handle Replacement (6 Way Manual)

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Driver or Passenger Seat Adjuster Handle Replacement

Callout Component Name

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1 Front Seat Adjuster Finish Cover Bolt Cap
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Front Seat Adjuster Handle Fastener

Caution: Refer to Fastener Caution.
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2
Tighten
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2.5 Y (22 lb in)

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3 Front Seat Adjuster Handle

© 2023 General Motors. All rights reserved.

 2022 Buick Encore GX | Encore GX Service Manual N America 14739426 | Seats | Document ID: 5359038

Front Seat Adjuster Handle Replacement (8 Way Hybrid Power

and 4 Way Manual)

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Front Seat Adjuster Handle Replacement

Callout Component Name

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Front Seat Adjuster Finish Cover Bolt Cap

1 Procedure
Use a flat bladed plastic tool to remove.
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2 Front Seat Adjuster Handle

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© 2023 General Motors. All rights reserved.

2022 Buick Encore GX | | Seats | Seat Hardware, Trim, and Upholstery |
Encore GX Service Manual N America 14739426 Repair Instructions |
Document ID: 5223650

Front Seat Adjuster Knob Replacement

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Front Seat Adjuster Knob Replacement

Callout Component Name

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Front Seat Adjuster Knob
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1 Procedure
Use a plastic trim tool if necessary.
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© 2023 General Motors. All rights reserved.

4/26/23, 7:39 AM Front Seat Adjuster Memory Module Bracket Replacement

2022 Buick Encore GX | | Seats |

Encore GX Service Manual N America 14739426 Power Seats | Repair Instructions |
Document ID: 5359055

Front Seat Adjuster Memory Module Bracket Replacement

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Front Seat Adjuster Memory Module Bracket Replacement
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Callout Component Name

Preliminary Procedures
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1. Front Seat Cushion Cover and Pad Replacement

2. Driver Seat Adjuster Memory Module Replacement
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Front Seat Adjuster Memory Module Bracket Bolt[4x]

Caution: Refer to Fastener Caution.
1
Tighten
4 Y (35 lb in)

2 Front Seat Adjuster Memory Module Bracket

© 2023 General Motors. All rights reserved.

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4/26/23, 7:39 AM Front Seat Adjuster Memory Switch Replacement

2022 Buick Encore GX | | Seats |

Encore GX Service Manual N America 14739426 Power Seats | Repair Instructions |
Document ID: 5359846

Front Seat Adjuster Memory Switch Replacement

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Front Seat Adjuster Memory Switch Replacement
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Callout Component Name

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Preliminary Procedure
Front Side Door Accessory Switch Mount Plate Replacement - Driver Side
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Front Seat Adjuster Memory Switch

1 Procedure
Use a flat-bladed tool to release the switch from the mount plate.

© 2023 General Motors. All rights reserved.

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2022 Buick Encore GX | | Seats | Seat Hardware, Trim, and Upholstery |
Encore GX Service Manual N America 14739426 Repair Instructions |
Document ID: 5359037

Front Seat Back Cover and Pad Replacement

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Front Seat Back Cover and Pad Replacement
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Callout Component Name
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Warning: Refer to SIR Warning.

Warning: Do not repair or replace the seat stitching or seams in the seat back trim cover with an internal
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mounted seat side airbag module. Replace the complete seat back trim cover from the OEM.
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Non-OEM seat stitching may cause improper airbag deployment which could result in personal
injury.
Preliminary Procedures
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1. Front Seat Inner Recliner Finish Cover Replacement

2. Front Seat Cushion Outer Finish Cover Replacement
3. Front Seat Head Restraint Guide Replacement
4. { If equipped } Front Seat Back Finish Panel Replacement

Front Seat Back Cover

1 Procedure
Remove the hog rings, velcros, and J-channel retainers.

Front Seat Back Pad

Procedure
2
1. Disconnect electrical connections, if applicable.
2. Transfer components as necessary.

© 2023 General Motors. All rights reserved.

2022 Buick Encore GX | | Seats | Seat Hardware, Trim, and Upholstery |
Encore GX Service Manual N America 14739426 Repair Instructions |
Document ID: 5359036

Front Seat Back Finish Panel Replacement

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Front Seat Back Finish Panel Replacement

Callout Component Name

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Warning: Refer to SIR Warning.
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Preliminary Procedures

1. Remove the passenger seat. Driver or Passenger Seat Removal and Installation
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2. Front Seat Head Restraint Replacement

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Front Seat Back Finish Panel

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Procedure

1. Remove the seat cover and reposition the cover away from the seat pad.
1 2. Using a suitable flat-bladed tool, push the retainer through the top of the cover and
remove it from the seat back frame.
3. Remove the cover from the seat. Ensure that the plastic channel around the airbag is
installed correctly.

© 2023 General Motors. All rights reserved.

2022 Buick Encore GX | | Seats | Seat Hardware, Trim, and Upholstery |
Encore GX Service Manual N America 14739426 Repair Instructions |
Document ID: 5223716

Front Seat Back Frame Dampener Replacement

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Front Seat Back Frame Dampener Replacement

Callout Component Name

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Preliminary Procedure
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Front Seat Back Cover and Pad Replacement

Front Seat Back Frame Dampener Nut [2x]

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Caution: Fastener Caution

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1
Tighten
10 Y (89 lb in)
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2 Front Seat Back Frame Dampener

© 2023 General Motors. All rights reserved.

2022 Buick Encore GX | | Seats | Seat Hardware, Trim, and Upholstery |
Encore GX Service Manual N America 14739426 Repair Instructions |
Document ID: 5223623

Front Seat Back Frame Replacement

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Driver or Passenger Seat Back Cushion Frame Replacement

Callout Component Name

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Warning: Refer to SIR Warning.
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Procedure
Driver or Passenger Seat Back Cover and Pad Replacement
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Driver or Passenger Seat Back Frame Fastener [4x]

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Caution: Refer to Fastener Caution.

1
Tighten
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35 Y (26 lb ft)

Driver or Passenger Seat Back Cushion Frame

Procedure
2
1. Disconnect the electrical connector.
2. Transfer components as necessary.

© 2023 General Motors. All rights reserved.

4/26/23, 7:42 AM Front Seat Back Heater Replacement

2022 Buick Encore GX | | Seats |

Encore GX Service Manual N America 14739426 Seat Heating and Cooling |
Repair Instructions | Document ID: 5222709

Front Seat Back Heater Replacement

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Driver or Passenger Seat Back Heater Replacement
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Callout Component Name

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Preliminary Procedure
Driver or Passenger Seat Back Cover and Pad Replacement
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Driver or Passenger Seat Back Heater

Note: Apply low heat with a heat gun to soften the adhesive before removal.
Procedure
1
Remove the heater element leaving the old adhesive strips intact on the seat
cushion. The new seat heater adhesive strips will be placed over the old adhesive
strips.

© 2023 General Motors. All rights reserved.

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2022 Buick Encore GX | | Seats | Seat Hardware, Trim, and Upholstery |
Encore GX Service Manual N America 14739426 Repair Instructions |
Document ID: 5359054

Front Seat Back Lumbar Replacement

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Front Seat Back Lumbar Replacement

Callout Component Name

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Preliminary Procedure
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Front Seat Back Cover and Pad Replacement

Front Seat Back Lumbar

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1 Procedure
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Disconnect the electrical connector.

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© 2023 General Motors. All rights reserved.

2022 Buick Encore GX | | Seats | Seat Hardware, Trim, and Upholstery |
Encore GX Service Manual N America 14739426 Repair Instructions |
Document ID: 5223652

Front Seat Back Recliner Knob Replacement

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Front Seat Recliner Knob Replacement

Callout Component Name

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Front Seat Recliner Knob
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1 Procedure
Use a plastic trim tool if necessary.
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© 2023 General Motors. All rights reserved.

2022 Buick Encore GX | | Seats | Seat Hardware, Trim, and Upholstery |
Encore GX Service Manual N America 14739426 Repair Instructions |
Document ID: 5218110

Front Seat Belt Anchor Plate Tensioner Cover Replacement

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Front Seat Belt Anchor Plate Tensioner Cover Replacement

Callout Component Name

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Front Seat Belt Anchor Plate Tensioner Cover
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1 Procedure
Using a suitable flat-bladed tool, remove the front seat belt anchor plate tensioner cover.
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© 2023 General Motors. All rights reserved.

2022 Buick Encore GX | | Seats | Seat Hardware, Trim, and Upholstery |
Encore GX Service Manual N America 14739426 Repair Instructions |
Document ID: 5359041

Front Seat Cushion Cover and Pad Replacement

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Front Seat Cushion Cover and Pad Replacement
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Callout Component Name
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Warning: Refer to SIR Warning.

Warning: To avoid personal injury, perform a passenger presence sensor rezeroing/ learn on the
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passenger presence system whenever you remove or replace the seat cushion trim. Failure to
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do so may cause the system to malfunction.

Warning: The passenger seat cushion assembly is serviced in a kit with the airbag front passenger
presence module, cushion pad (and if equipped, heat mat, vent mat, vent mat support, comfort
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pads). All components in the service kit are assembled and calibrated as a unit and must be
replaced as a complete assembly to prevent possible injury to the occupant. Using only some of
the components in the service kit will cause the passenger presence system to operate
improperly.
Preliminary Procedures

1. Remove the appropriate front seat. Front Seat Removal and Installation
2. Front Seat Inner Recliner Finish Cover Replacement
3. Front Seat Cushion Outer Finish Cover Replacement
4. { If equipped } Driver or Passenger Seat Adjuster Finish Cover Retainer Replacement

Front Seat Cushion Cover

Procedure

1. Disengage the hog rings, J-channel retainers, and clips.

2. Disconnect the electrical connectors that attach to the seat cushion, if euipped..
1
3. Remove the front seat cushion cover and front seat cushion pad from the seat cushion
frame as an assembly.
4. Separate the front seat cushion cover and the front seat cushion pad by pulling the cover
away from the pad.

2 © 2023 General Motors. All rights reserved.

Front Seat Cushion Pad
Callout Component Name

Warning: Replace the passenger presence system as a complete assembly to prevent

possible injury to the occupant. All the components in the service kit are
assembled and calibrated as a unit. Using only some of the components in the
service kit will cause the passenger presence system to operate improperly.
Note:

Separate the seat cushion heater mat from the seat cushion pad by pulling the
heater mat away from the pad. Use a heat gun to loosen the glue : moving slowly
from one end to the other, slowly peeling the heater mat up as you go. This makes
removal easier and ensures minimum damage to the underlying foam. Be careful
not to use overly high temperatures or hold the heat gun in one place for too long
as this can damage the foam.
The front seat belt presence sensor and front seat cushion heater, if equipped, are
integral parts of the front seat cushion pad.

1. { If equipped } Airbag Front Passenger Presence Module Replacement

2. Install the appropriate front seat. Front Seat Removal and Installation

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© 2023 General Motors. All rights reserved.

2022 Buick Encore GX | | Seats | Seat Hardware, Trim, and Upholstery |
Encore GX Service Manual N America 14739426 Repair Instructions |
Document ID: 5223627

Front Seat Cushion Frame Replacement

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Driver or Passenger Seat Cushion Frame Replacement

Callout Component Name

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Warning: Refer to SIR Warning.
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Preliminary Procedure
Front Seat Cushion Cover and Pad Replacement
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Driver or Passenger Seat Back Frame Fastener [4x]

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Caution: Refer to Fastener Caution.

1
Tighten
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35 Y (26 lb ft)

Driver or Passenger Seat Cushion Frame

Procedure
2
1. Disconnect the electrical connector.
2. Transfer components as necessary.

© 2023 General Motors. All rights reserved.

2022 Buick Encore GX | | Seats | Seat Hardware, Trim, and Upholstery |
Encore GX Service Manual N America 14739426 Repair Instructions |
Document ID: 5256884

Front Seat Cushion Outer Finish Cover Replacement (4 Way

Manual)

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Front Seat Cushion Outer Finish Cover Replacement
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Callout Component Name
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Preliminary Procedure
Driver or Passenger Seat Adjuster Handle Replacement
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Front Seat Cushion Outer Finish Cover Fastener [2x]

Caution: Refer to Fastener Caution.
1
Tighten
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2.5 Y (22 lb in)

2 Front Seat Cushion Outer Finish Cover

© 2023 General Motors. All rights reserved.

2022 Buick Encore GX | | Seats | Seat Hardware, Trim, and Upholstery |
Encore GX Service Manual N America 14739426 Repair Instructions |
Document ID: 5220135

Front Seat Cushion Outer Finish Cover Replacement (6 Way

Manual)

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Front Seat Cushion Outer Finish Cover Replacement
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Callout Component Name
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Preliminary Procedure
Front Seat Vertical Actuator Lever Replacement
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Front Seat Cushion Outer Finish Cover Fastener [2x]

Caution: Refer to Fastener Caution.
1
Tighten
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2.5 Y (22 lb in)

2 Front Seat Cushion Outer Finish Cover

© 2023 General Motors. All rights reserved.

2022 Buick Encore GX | | Seats | Seat Hardware, Trim, and Upholstery |
Encore GX Service Manual N America 14739426 Repair Instructions |
Document ID: 5359053

Front Seat Cushion Outer Finish Cover Replacement (8 Way

Hybrid Power)

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Front Seat Cushion Outer Finish Cover Replacement
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Callout Component Name

Preliminary Procedure
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Front Seat Adjuster Handle Replacement

Front Seat Cushion Outer Finish Cover Bolt [3x]

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Caution: Refer to Fastener Caution.

1
Tighten
4 Y (35 lb in)

Front Seat Cushion Outer Finish Cover

Procedure

1. Remove the outer finish cover from the inner finish cover.
2. Press inward on the outer finish cover just above the switch to disengage the hooks from
2
the retainer and lift upward to remove the outer finish cover.
3. Remove and reposition the seat adjuster switch and lumbar control switch.
4. Transfer components as necessary.

Note: If the hooks are not fully disengaged, damage to the cover will occur.

© 2023 General Motors. All rights reserved.

2022 Buick Encore GX | | Seats | Seat Hardware, Trim, and Upholstery |
Encore GX Service Manual N America 14739426 Repair Instructions |
Document ID: 5220134

Front Seat Cushion Outer Finish Cover Replacement (8 Way

Power)

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Front Seat Cushion Outer Finish Cover Replacement
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Callout Component Name

Front Seat Cushion Outer Finish Cover Fastener [2x]

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Caution: Refer to Fastener Caution.

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1
Tighten
2.5 Y (22 lb in)
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Front Seat Cushion Outer Finish Cover

Procedure

1. Disconnect the outer finish cover from the inner finish cover.
2. Press inward on the outer finish cover just above the switch to disengage the hooks from
2 the retainer and lift upward to remove the outer finish cover.
3. Remove and reposition the seat adjuster switch and lumbar control switch.
4. Transfer components as necessary.

Note: If the hooks are not fully disengaged, damage to the cover will occur.

© 2023 General Motors. All rights reserved.

2022 Buick Encore GX | | Seats | Seat Hardware, Trim, and Upholstery |
Encore GX Service Manual N America 14739426 Repair Instructions |
Document ID: 5300070

Front Seat Cushion Pad Support Replacement

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Front Seat Cushion Pad Support Replacement

Callout Component Name

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Warning: Refer to SIR Warning.
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Preliminary Procedure
Front Seat Cushion Cover and Pad Replacement
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Front Seat Cushion Pad Support

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Procedure
1
1. Disengage the harness retainers from the front seat cushion pad support.
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2. Transfer components as necessary.

© 2023 General Motors. All rights reserved.

 2022 Buick Encore GX | Encore GX Service Manual N America 14739426 | Seats | Document ID: 5220145

Front Seat Head Restraint Guide Replacement

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Front Seat Head Restraint Guide Replacement
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Callout Component Name
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Preliminary Procedure
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Driver or Passenger Seat Head Restraint Replacement.

Front Seat Head Restraint Guide

Procedure
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Using a suitable flat-bladed tool, slide the tool on the outside of the guide until it finds the
slot. Then push the plastic slot inward and pull upward to remove the guide from the seat
back frame.
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© 2023 General Motors. All rights reserved.

 2022 Buick Encore GX | Encore GX Service Manual N America 14739426 | Seats | Document ID: 5220152

Front Seat Head Restraint Replacement

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Driver or Passenger Seat Head Restraint Replacement
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Callout Component Name
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Driver or Passenger Front Seat Head Restraint Guide Bezel [2x]
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Procedure

1 1. Raise the headrest to gain access to the head restraint guide bezel.
2. Twist the bezel counter clockwise and push the bezel upward on the head restraint
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adjuster rod.
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Driver or Passenger Seat Head Restraint Clip [2x]

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Procedure
2
Using a suitable pointed or flat bladed tool, push the metal clip rearward while pulling upward
on the head restraint.

3 Driver or Passenger Seat Head Restraint

© 2023 General Motors. All rights reserved.

4/26/23, 7:42 AM Front Seat Heater Control Module Bracket Replacement

2022 Buick Encore GX | | Seats |

Encore GX Service Manual N America 14739426 Seat Heating and Cooling |
Repair Instructions | Document ID: 5359042

Front Seat Heater Control Module Bracket Replacement

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Front Seat Heater Control Module Bracket Replacement
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Callout Component Name

Preliminary Procedures
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1. Front Seat Cushion Cover and Pad Replacement

2. Front Seat Heater Vent Control Hardware Module Replacement
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Front Seat Heater Control Module Bracket Bolt [3x]

Caution: Refer to Fastener Caution.
1
Tighten
2.5 Y (22 lb in)

2 Front Seat Heater Control Module Bracket

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4/26/23, 7:42 AM Front Seat Heater Vent Control Hardware Module Replacement

2022 Buick Encore GX | | Seats |

Encore GX Service Manual N America 14739426 Seat Heating and Cooling |
Repair Instructions | Document ID: 5359043

Front Seat Heater Vent Control Hardware Module

Replacement

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Front Seat Heater Vent Control Hardware Module Replacement

Callout Component Name

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Preliminary Procedure
Remove the passenger seat. Driver or Passenger Seat Removal and Installation
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Front Seat Heater Vent Control Hardware Module Bolt

Caution: Refer to Fastener Caution.
1
Tighten
2.5 Y (22 lb in)

Front Seat Heater Vent Control Hardware Module

Procedure
2
1. Release the retaining tabs.
2. Disconnect the electrical connector.

© 2023 General Motors. All rights reserved.

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2022 Buick Encore GX | | Seats | Seat Hardware, Trim, and Upholstery |
Encore GX Service Manual N America 14739426 Repair Instructions |
Document ID: 5220141

Front Seat Inner Recliner Finish Cover Replacement

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Front Seat Inner Recliner Finish Cover Replacement
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Callout Component Name
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Preliminary Procedure
Remove the appropriate front seat. Front Seat Removal and Installation
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Driver or Passenger Seat Inner Recliner Finish Cover Fastener [2x]

Caution: Refer to Fastener Caution.
1
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Tighten
2.5 Y (22 lb in)

Driver or Passenger Seat Inner Recliner Finish Cover

Procedure
2
1. Use a suitable tool to separate the front seat inner recliner finish cover.
2. Install the appropriate front seat. Front Seat Removal and Installation

© 2023 General Motors. All rights reserved.

2022 Buick Encore GX | | Seats | Seat Hardware, Trim, and Upholstery |
Encore GX Service Manual N America 14739426 Repair Instructions |
Document ID: 5222701

Front Seat Inner Recliner Inner Finish Cover Replacement

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Front Seat Inner Recliner Inner Finish Cover Replacement

Callout Component Name

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Preliminary Procedure
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Front Seat Cushion Cover and Pad Replacement

1 Front Seat Inner Recliner Inner Finish Cover

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© 2023 General Motors. All rights reserved.

2022 Buick Encore GX | | Seats | Seat Hardware, Trim, and Upholstery |
Encore GX Service Manual N America 14739426 Repair Instructions |
Document ID: 5222699

Front Seat Outer Recliner Inner Finish Cover Replacement

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Front Seat Outer Recliner Inner Finish Cover Replacement
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Callout Component Name
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Preliminary Procedures

1. Front Seat Cushion Cover and Pad Replacement

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2. Remove the 4 seat back frame fasteners and remove the front seat back frame with front seat back
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cover and pad from the front seat cushion frame. Front Seat Back Frame Replacement
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1 Front Seat Outer Recliner Inner Finish Cover

© 2023 General Motors. All rights reserved.

 2022 Buick Encore GX | | Seats | Seat Hardware, Trim, and Upholstery |
Encore GX Service Manual N America 14739426 Repair Instructions |
Document ID: 5219188

Front Seat Removal and Installation

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Front Seat Removal and Installation

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Callout Component Name

Warning: Refer to SIR Warning.

Preliminary Procedures

1. Disable the SIR system. SIR Disabling and Enabling

2. Disconnect the electrical connectors.

Front Seat Bolt [4x]

Caution: Refer to Fastener Caution.
Procedure

1. Adjust the seat forward or rearward to access the bolts.

1
2. According to the sequence callouts, install and tighten the inboard bolt first, then the outboard bolt as shown in
the graphic from the front area of the driver or passenger seat.

Tighten
43 Y((32 lb ft)

Front Seat
2 Procedure
Enable the SIR System. SIR Disabling and Enabling

© 2023 General Motors. All rights reserved.

2022 Buick Encore GX | | Seats | Seat Hardware, Trim, and Upholstery |
Encore GX Service Manual N America 14739426 Repair Instructions |
Document ID: 5359045

Front Seat Switch Bezel Bezel Replacement (8 Way Hybrid

Power)

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Front Seat Switch Bezel Bezel Replacement
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Component Name
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Callout Driver Seat Adjuster Switch

Preliminary Procedures
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1. Remove the passenger side of front seat cushion outer finish cover. Front Seat Cushion Outer Finish
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Cover Replacement
2. Passenger Seat Adjuster Switch Replacement
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3. Passenger Seat Lumbar Control Switch Replacement

Front Seat Switch Bezel Bezel

1 Procedure
Release the retaining tabs.

© 2023 General Motors. All rights reserved.

2022 Buick Encore GX | | Seats | Seat Hardware, Trim, and Upholstery |
Encore GX Service Manual N America 14739426 Repair Instructions |
Document ID: 5359044

Front Seat Switch Bezel Bezel Replacement (8 Way Power)

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Front Seat Switch Bezel Bezel Replacement

Callout Component Name

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Preliminary Procedures
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1. Remove the driver side of front seat cushion outer finish cover. Front Seat Cushion Outer Finish Cover
Replacement
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2. Driver Seat Adjuster Switch Replacement

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3. Driver Seat Lumbar Control Switch Replacement

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1 Front Seat Switch Bezel Bezel

© 2023 General Motors. All rights reserved.

4/26/23, 7:40 AM Front Seat Tilt Adjuster Actuator Replacement

2022 Buick Encore GX | | Seats |

Encore GX Service Manual N America 14739426 Power Seats | Repair Instructions |
Document ID: 5220139

Front Seat Tilt Adjuster Actuator Replacement

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Front Seat Tilt Adjuster Actuator Replacement
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Callout Component Name

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Preliminary Procedure
Driver or Passenger Seat Removal and Installation
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Front Seat Tilt Adjuster Actuator Bolt

Caution: Refer to Fastener Caution.
Procedure

1 1. Set the seat to it's highest position.

2. Remove the securing bolt from the actuator and cushion frame.

Tighten
8 Y (71 lb in)

Front Seat Tilt Adjuster Actuator

Procedure
2
1. Disconnect the electrical connector.
2. Remove the tilt adjuster actuator by pulling downward from the cushion frame.

© 2023 General Motors. All rights reserved.

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2022 Buick Encore GX | | Seats | Seat Hardware, Trim, and Upholstery |
Encore GX Service Manual N America 14739426 Repair Instructions |
Document ID: 5220136

Front Seat Vertical Actuator Lever Replacement

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Front Seat Vertical Actuator Lever Replacement

Callout Component Name

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Preliminary Procedure
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Driver or Passenger Seat Adjuster Handle Replacement

1 Front Seat Adjuster Finish Cover Bolt Cap

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Front Seat Vertical Actuator Lever Fastener [2x]

Caution: Refer to Fastener Caution.
2
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Tighten
2.5 Y (22 lb in)

3 Front Seat Vertical Actuator Lever

© 2023 General Motors. All rights reserved.

4/26/23, 7:40 AM Front Seat Wiring Harness Replacement

2022 Buick Encore GX | | Seats |

Encore GX Service Manual N America 14739426 Power Seats | Repair Instructions |
Document ID: 5223681

Front Seat Wiring Harness Replacement

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Front Seat Wiring Harness Replacement

Callout Component Name

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Warning: Refer to SIR Warning.

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Preliminary Procedures

1. SIR Disabling and Enabling

2. Front Seat Removal and Installation
3. Front Seat Back Cover and Pad Replacement
4. Front Seat Cushion Cover and Pad Replacement

Front Seat Wiring Harness

1 Note: Typical wiring harness shown, individual harness may be different due to
option content. Various seat components may need to be removed from the
seat to access the harness depending on seat and content options.

© 2023 General Motors. All rights reserved.

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4/26/23, 7:41 AM Heated Seats Description and Operation

2022 Buick Encore GX | Encore GX Service Manual N America 14739426| Seats | Seat Heating and Cooling |
Description and Operation | Document ID: 5135123

Heated Seats Description and Operation

Heated/Vented Seat Components

The heated/vented seat system consists of the following components:

Heated seat switches

Body control module
Seat heating control module
Driver seat cushion heating element
Driver seat cushion temperature sensor
Driver seat back heating element
Driver seat back temperature sensor
Passenger seat cushion heating element

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Passenger seat cushion temperature sensor
Passenger seat back heating element
Passenger seat back temperature sensor

Heated Seat Switches .c

The driver and passenger heated seats are controlled by separate heated seat switches located
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within the HVAC controls. To operate the engine must be running. The BCM is the heated and
vented seat system master. It monitors heated seat switch activations to determine user
requested operating mode. Based on the requested operating mode, the BCM sends a LIN Bus
serial data message to the Seat Heating Control Module to control the heating elements. The BCM
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also controls the indicators used to provide the operator with feedback as to the operating status
of the system. With each press of the switch, the system will cycle through High, Medium, Low,
and then back to Off again.
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Heated Seat Operation

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The seat heating control module controls heated seat operation for the driver and passenger
seats. When active, power is applied to the seat cushion and back heater elements through
common pulse width modulated (PWM) voltage supply control circuits. Each individual heater
element is switched to ground by the module through a common low side drive control circuit.

When inactive the seat heating control module connects the heating element low side outputs to a
common reference point internal to the module which is biased to approximately 3.5 V. The
module uses this biased voltage in order to check the high side and low side control circuits for a
short to battery or ground before enabling the driver and passenger seat heating elements.
During heated seat operation, the seat heating control module interrupts control of the heating
elements every 10 s for approximately 10 ms to make this biased voltage check.

With both the seat cushion and seat back heater elements disconnected, if the high side output of
the module is measured it will display a low current 12 V bleed off voltage. This bleed off voltage
does not have a meaningful diagnostic purpose. With the heater element connected you would
just see the 3.5 V biased voltage from this circuit.

Temperature Regulation

The seat back and cushion temperature sensors (thermistors) are packaged with the seat heating
elements located just under the seat covers. The seat heating control module supplies each
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4/26/23, 7:41 AM Heated Seats Description and Operation

temperature sensor with a 5 V reference signal circuit and a low reference circuit. The module
monitors the voltage from the signal circuit to determine the temperature of the seat.

The temperature sensor varies in resistance based on the temperature of the heating element
causing the signal voltage to change. Once the module senses the seat reached the set
temperature, it will then begin regulate the current flow through the heater elements in order to
maintain the desired seat temperature based on the feedback voltage from the sensor.

If the heated seats are on high, the temperature level may automatically be lowered after
approximately 30 min of operation.

Heated Seat Operation During Remote Start

Refer to Vehicle Personalization in the Owner’s Manual for Remote Start Auto Heated and
Ventilation Seats.

During remote start, the heated seats will turn ON when the ambient temperature is below 10° C
(50° F).

During remote start, the seat ventilation system will turn ON when the ambient temperature is
above 27° C (80° F).

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Load Shed Management

The electrical power management function is designed to monitor the vehicle electrical load and
determine when the battery is potentially in a high discharge condition. The heated seat system is
one of the vehicle loads that is subject to reduction during a battery discharge condition. For more
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information on load management refer to Electrical Power Management Description and
Operation.
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© 2023 General Motors. All rights reserved.

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4/26/23, 7:44 AM Heated/Cooled Seat Schematics

2022 Buick Encore GX | Encore GX Service Manual N America 14739426 | Seats | Seat Heating and Cooling | Schematic and Routing Diagrams |
Document ID: 5675032

Heated/Cooled Seat Schematics

Heated Seats (KA1)

B+ L
O
X51A C
P17
Fuse Info
F32DA F34DA Block - K9 Display D
15A 15A Instrument Body 1 2 3 1 2 3 Module E
F32A F34A Panel Control S
C
Module
A90
Logic
6140 5240
RD/GN RD/BU
X204 34 40

6140 5240
RD/GN RD/BU

X302 3 5 13
6140 5240 6133
RD/GN RD/BU GN/BU

X1 10 7 X2 8
K29
B+ B+ Seat
Heating
Control
Module

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X1 8 4 6 X2 6 1 3 11 X1 3 2 X2 5 2 12 4

550 2078 2077 2079 2080 2425 2426 2480 2479 2434 2435 2482 2436
BK BN/BK BN/VT YE/GY BK/YE BU BK/VT GY/BK BN/BU WH/GY BK/GY BK/GN WH/BU
X302 28 24 26 25 27 11
J334

2078 2077 2079 2080 2425 2426 2479 2479

BN/BK BN/VT YE/GY BK/YE BU BK/VT BN/BU BN/BU

X301 21 4 26 10 25 27
2078 2077 2079 2080
BN/BK BN/VT

2077
BN/VT
YE/GY
.cBK/YE
2425
BU
J332

2077
BN/VT
1 2

E14D
Seat Heating
Element -
Passenger
2 1

E14C
Seat
Heating
Element -
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1 2 2 1 2426
BK/VT Cushion Passenger
Back

E14B E14A
Seat Heating Seat 4 3 3 4
Element - Heating
Driver Cushion Element -
Driver Back
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4 3 3 4 2480 2435 2482 2480

GY/BK BK/GY BK/GN GY/BK

2078 2080 2426 2078

BN/BK BK/YE BK/VT BN/BK
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J335

J336
G301
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© 2023 General Motors. All rights reserved.

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 2022 Buick Encore GX | | Seats |
Encore GX Service Manual N America 14739426 Power Seats | Description and Operation |
Document ID: 3259861

Lumbar Support Description and Operation

Lumbar Support Components

The power seat lumbar support systems consist of the following components:

S65 Seat lumbar switch

M53 Lumbar support motor

The seat lumbar switch provides both power and ground to the lumbar support motor. The motor contains an
electronic circuit breaker (PTC) that will reset only after voltage has been removed from the motor. The motor
moves the lumbar support forward and rearward.

When the lumbar switch is operated to move the lumbar support rearward, battery positive voltage is applied
through the lumbar rearward switch contacts and the lumbar motor rearward control circuit to the lumbar support
motor. The motor is grounded through the lumbar forward switch contacts and the lumbar motor forward control
circuit to the motor. The motor runs to drive the lumbar support rearward away from the occupant's back until the
switch is released. Moving the lumbar support forward works similarly to moving the lumbar support rearward,
except that battery positive voltage and ground are applied on opposite circuits causing the motor to run in the
opposite direction.

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© 2023 General Motors. All rights reserved.

 2022 Buick Encore GX | | Seats | Power Seats |
Encore GX Service Manual N America 14739426 Diagnostic Information and Procedures |
Document ID: 4409913

Lumbar Support Malfunction

Diagnostic Instructions

Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
Review Strategy Based Diagnosis for an overview of the diagnostic approach.
Diagnostic Procedure Instructions provides an overview of each diagnostic category.

Diagnostic Fault Information

Short to Open/High Short to Signal

Circuit Ground Resistance Voltage Performance

B+ 1 2 — —

Power Seat Lumbar Motor Rearward

1 2 — —
Control

Power Seat Lumbar Motor Forward

1 2 — —
Control

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Ground — 2 — —

1. The power seat and lumbar support are inoperative

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2. The lumbar support is inoperative
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Circuit/System Description
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The seat lumbar switch provides both power and ground to the lumbar support motor. When the lumbar
switches are in an inactive state, the switch contacts are closed to the switch ground circuit.
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The lumbar support horizontal motor is reversible. For example, when the lumbar forward switch is pressed
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to move the lumbar support forward, battery voltage is applied through the switch contacts and the lumbar
motor forward control circuit to the motor. With the lumbar motor rearward switch contacts closed to the
switch ground circuit, the motor runs in order to drive the lumbar support forward toward the occupants
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back until the switch is released. Moving the lumbar support rearward works similarly to moving the lumbar
support forward, except that battery positive voltage and ground are applied on opposite circuits causing the
motor to run in the opposite direction.

Reference Information
Schematic Reference

Driver Seat Schematics

Passenger Seat Schematics

Connector End View Reference

Master Electrical Component List

Description and Operation

Lumbar Support Description and Operation

Electrical Information Reference

Circuit Testing
Connector Repairs
Testing for Intermittent Conditions and Poor Connections
Wiring Repairs
© 2023 General Motors. All rights reserved.
Circuit/System Testing
1. Ignition OFF and all vehicle systems OFF, disconnect the harness connector at the appropriate S65 Seat
Lumbar Support Switch. It may take up to 2 min for all vehicle systems to power down.
2. Test for less than 10 Ω between the ground circuit terminal E and ground.
⇒ If 10 Ω or greater
2.1. Ignition OFF.
2.2. Test for less than 2 Ω in the ground circuit end to end.
⇒ If 2 Ω or greater, repair the open/high resistance in the circuit.
⇒ If less than 2 Ω, repair the open/high resistance in the ground connection.
⇓ If less than 10 Ω
3. Ignition ON.
4. Verify a test lamp illuminates between the B+ circuit terminal G and ground.
⇒ If the test lamp does not illuminate
4.1. Ignition OFF, remove the test lamp.
4.2. Test for infinite resistance between the B+ circuit and ground.
⇒ If less than infinite resistance, repair the short to ground on the circuit.
⇓ If infinite resistance
4.3. Test for less than 2 Ω in the B+ circuit end to end.
⇒ If 2 Ω or greater, repair the open/high resistance in the circuit.
⇒ If less than 2 Ω, verify the fuse is OK and there is voltage at the fuse.

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⇓ If the test lamp illuminates
5. Ignition OFF, connect the harness connector at the S65 Seat Lumbar Support Switch and disconnect the
harness connector at the M53 Seat Lumbar Support Motor.
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6. Connect a test lamp between control circuit terminal 1 and control circuit terminal 2, ignition ON.
7. Verify the test lamp turns ON when commanding the lumbar support Forward and Rearward using the
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S65 Seat Lumbar Support Switch.
⇒ If the test lamp remains OFF during either of the commands
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7.1. Ignition OFF, disconnect the harness connector at the S65 Seat Lumbar Support Switch.
7.2. Test for infinite resistance between each control circuit and ground.
⇒ If less than infinite resistance, repair the short to ground on the circuit.
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⇓ If infinite resistance
7.3. Test for less than 2 Ω in each control circuit end to end.
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⇒ If 2 Ω or greater, repair the open/high resistance in the circuit.

⇒ If less than 2 Ω, test or replace the S65 Seat Lumbar Support Switch.
⇓ If the test lamp turns ON during each of the commands
8. Test or replace the M53 Seat Lumbar Support Motor.

Component Testing
Seat Lumbar Support Switch

1. Ignition OFF, disconnect the harness connector at the appropriate S65 Seat Lumbar Support Switch.
2. Test for infinite resistance between the B+ terminal G and each control terminal with the switch in the
open position.
⇒ If less than infinite resistance
Replace the S65 Seat Lumbar Support Switch.
⇓ If infinite resistance
3. Test for less than 2 Ω between the B+ terminal G and each control terminal with the appropriate switch in
the closed position.
⇒ If 2 Ω or greater
Replace the S65 Seat Lumbar Support Switch.
⇓ If less than 2 Ω
4. Test for less than 2 Ω between the ground terminal E and each control terminal with the switch in the
open position. © 2023 General Motors. All rights reserved.
 ⇒ If 2 Ω or greater
Replace the S65 Seat Lumbar Support Switch.
⇓ If less than 2 Ω
5. All OK.

M53 Seat Lumbar Support Motor

1. Ignition OFF, disconnect the harness connector at the M53 Seat Lumbar Support Motor.
Note: When performing the following tests, make sure that the lumbar support is not already in the
position the test is attempting to produce.
2. Install a 30 A fused jumper wire between control terminal 1 and 12 V.
3. Momentarily install a jumper wire between control terminal 2 and ground. The M53 Seat Lumbar Support
Motor should momentarily perform the lumbar FORWARD function.
⇒ If the motor does not perform the lumbar FORWARD function
Replace the M53 Seat Lumbar Support Motor.
⇓ If the motor performs the lumbar FORWARD function
4. Reverse the polarity of jumper wires; the lumbar motor should perform REARWARD function.
⇒ If the motor does not perform the lumbar REARWARD function
Replace the M53 Seat Lumbar Support Motor.
⇓ If the motor performs the lumbar REARWARD function
5. All OK.

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Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

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© 2023 General Motors. All rights reserved.

 2022 Buick Encore GX | | Seats | Power Seats |
Encore GX Service Manual N America 14739426 Diagnostic Information and Procedures |
Document ID: 4750792

Memory Seat Feature Malfunction

Diagnostic Instructions

Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
Review Strategy Based Diagnosis for an overview of the diagnostic approach.
Diagnostic Procedure Instructions provides an overview of each diagnostic category.

Diagnostic Fault Information

Short to Open/High Short to Signal

Circuit Ground Resistance Voltage Performance

B2755 00 or
Memory 1 Switch Signal B2755 02 1 B2755 01
59

B2765 02 or
Memory Set Switch Signal 1 — —
59

Low Reference — 1 — —

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1. Memory recall is inoperative

Circuit/System Description
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Low reference is supplied to the driver seat memory switch from the seat memory control module. When a
memory switch is pressed, the signal circuit from the seat memory control module is pulled low through the
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switch contacts and series of resistors indicating the memory recall request. In response to this signal, the
seat memory control module commands the appropriate seat motors to move to the pre-recorded seat
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positions stored in memory.

Diagnostic Aids
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The K40D Seat Memory Control Module – Driver must be awake when measuring voltage from either one of
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the memory seat switch signal circuits. Voltage readings of 0.0 V or 5 V are possible if the module is not fully
awake and result in misdiagnosing the circuit.
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Reference Information
Schematic Reference

Driver Seat Schematics

Connector End View Reference

Master Electrical Component List

Description and Operation

Memory Seats Description and Operation

Electrical Information Reference

Circuit Testing
Connector Repairs
Testing for Intermittent Conditions and Poor Connections
Wiring Repairs

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

1. Ignition ON. © 2023 General Motors. All rights reserved.

 2. Verify that all power seat functions operate when being controlled by the S64D Seat Adjuster Switch –
Driver.
⇒ If any manual power seat function does not operate
Refer to Power Seat Malfunction
⇓ If all manual power seat functions operate
3. Refer to Circuit/System Testing.

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the S47D Seat Memory Switch – Driver.
2. Test for less than 30 Ω between the low reference circuit terminal 1 and ground.
⇒ If 30 Ω or greater
2.1. Ignition OFF, disconnect the X6 harness connector at the K40D Seat Memory Control Module –
Driver.
2.2. Test for less than 2 Ω in the low reference circuit end to end
⇒ If 2 Ω or greater, repair the open/high resistance in the circuit.
⇒ If less than 2 Ω, replace the K40D Seat Memory Control Module – Driver.
⇓ If less than 30 Ω
3. Ignition ON, press a power seat switch in order to wake up the K40D Seat Memory Control Module –
Driver.
4. Test for 9 V or greater between each signal circuit terminal listed below and ground:

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Memory set switch signal terminal 5
Memory switch signal terminal 6
⇒ If less than 9 V
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4.1. Ignition OFF, disconnect the X6 harness connector at the K40D Seat Memory Control Module –
Driver.
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4.2. Test for infinite resistance between the signal circuit and ground.
⇒ If less than infinite resistance, repair the short to ground on the circuit.
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⇓ If infinite resistance
4.3. Test for less than 2 Ω in the signal circuit end to end.
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⇒ If 2 Ω or greater, repair the open/high resistance in the circuit.

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⇒ If less than 2 Ω, replace the K40D Seat Memory Control Module – Driver.
⇓ If 9 V or greater
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5. Ignition OFF, disconnect the X6 harness connector at the K40D Seat Memory Control Module – Driver,
ignition ON.
6. Test for less than 1 V between each signal circuit terminal listed below and ground:
Memory set switch signal terminal 5
Memory switch signal terminal 6
⇒ If 1 V or greater
Repair the short to voltage on the circuit.
⇓ If less than 1 V
7. Test or replace the S47D Seat Memory Switch – Driver.

Component Testing
Driver Seat Memory Switch

1. Ignition OFF, disconnect the harness connector at the S47D Seat Memory Switch – Driver.
2. Test for infinite resistance between each signal terminal listed below and the low reference terminal 1
with the switch in the open position.
Terminal 5
Terminal 6
⇒ If less than infinite resistance
Replace the S47D Seat Memory Switch – Driver.
⇓ If infinite resistance © 2023 General Motors. All rights reserved.
 3. Test for less than 4 Ω between the signal terminal 5 and the low reference terminal 1 while pressing the
Memory SET button.
⇒ If 4 Ω or greater
Replace the S47D Seat Memory Switch – Driver.
⇓ If less than 4 Ω
4. Test for 573–701 Ω between the signal terminal 6 and the low reference terminal 1 while pressing the
Memory 1 button.
⇒ If not between 573–701 Ω
Replace the S47D Seat Memory Switch – Driver.
⇓ If between 573–701 Ω
5. Test for 1800–2201 Ω between the signal terminal 6 and the low reference terminal 1 while pressing the
Memory 2 button.
⇒ If not between 1800–2201 Ω
Replace the S47D Seat Memory Switch – Driver.
⇓ If between 1800–2201 Ω
6. Test for 5.52k–6.73 kΩ between the signal terminal 6 and the low reference terminal 1 while pressing the
Exit button.
⇒ If not between 5.52k–6.73 kΩ
Replace the S47D Seat Memory Switch – Driver.
⇓ If between 5.52k–6.73 kΩ

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7. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

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Control Module References for K40D Seat Memory Control Module – Driver replacement, programming
and setup
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© 2023 General Motors. All rights reserved.

 2022 Buick Encore GX | | Seats |
Encore GX Service Manual N America 14739426 Power Seats | Description and Operation |
Document ID: 3996171

Memory Seats Description and Operation

The memory seat system consists of the following components:

K40 Seat memory control module

S64 Seat adjuster switch
S47 Seat memory switch
M51 Seat horizontal motor
M50 Seat front vertical motor
M55 Seat rear vertical motor
M56 Seat recline motor

Driver Seat Adjuster Switch

The seat memory control module supplies a low current voltage to each signal circuit of the seat adjuster
switch. When the driver seat adjuster switches are pressed, the appropriate signal circuit from the seat
memory control module is pulled low through the switch contacts indicating the power seat command. The
seat memory control module then commands the appropriate driver seat motor to move in response to the
switch signal.

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Seat Memory Control Module Power and Grounds

Battery voltage is supplied at all times to the seat memory control module through two different circuits. One
circuit is used by the module to apply power to the driver seat motors and lumbar motors, if equipped, when
commanded ON. The second battery voltage circuit is used to power up module and supply a reference
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voltage to the seat position sensors. Ground is provided to the seat memory control module through a single
ground circuit and ground connection.
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Seat Motors
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There are 4 motors that move the position of the seat. These are the seat horizontal motor, seat front vertical
motor, seat rear vertical motor, and the seat back recline motor. The horizontal motor moves the entire seat
forward and rearward. The seat front vertical motor moves the front of the seat cushion up or down. The
seat rear vertical motor moves the rear of the seat cushion up and down. Due to the seat adjuster switch
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design the front tilt and the seat height adjuster motor cannot be operated at the same time The recline
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motor moves the angle of the seat back forward or rearward.

The seat memory control module controls all seat and lumbar motors via half bridges that are connected to a
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single power rail internal to the module. The module connects all seat and lumbar motor outputs to a
common ground whenever they are not in operation. The seat memory control module checks to see if any
motor control circuits are shorted to ground or voltage before enabling any seat or lumbar motor. All of the
motors operate independently of each other. Each motor contains a electronic circuit breaker (PTC), which
will reset only after voltage has been removed from the motor.

All seat motors are reversible. For example, when a seat switch is pressed to move the entire seat forward,
ground is applied through the switch contacts onto the seat horizontal forward switch signal circuit to the
seat memory control module. In response to this signal, the module applies battery voltage through the
driver seat horizontal motor forward control circuit and ground through the driver seat horizontal motor
rearward control circuit to the motor. The motor runs in order to drive the entire seat forward. Moving the
entire seat rearward works similarly to moving the entire seat forward, except that battery voltage and
ground are applied on the opposite circuits causing the motor to run in the opposite direction. All of the
motors are powered this way.

Position Sensors

To monitor seat position, each seat motor has an internal 2-wire hall-effect position sensor. The seat memory
control module supplies all the sensors with a common 12 V reference when the seat is moving and a unique
signal circuit for each sensor. During seat motor operation, the position sensors provide a specific number of
pulse signals for every revolution of the motor shaft.

The seat memory control module determines seat position by keeping a running counter where movement in
the forward/upward direction adds counts and movement in the rearward/down direction subtracts counts.
The value of the counter will be in the range of 0 – 65,535

© 2023 General Motors. All rights reserved.

 The value of these counters, which represent seat positions, are stored in memory for future seat memory
recall operation. During a memory seat position recall, the seat memory control module moves the seat in
such a way to return it the stored counter value.

Memory Functions

In all power modes except crank, memory recalls can be initiated by pressing and holding one of the
memory position buttons until the seat reaches the stored memory position associated with the activated
button. This is called a supervised recall.

The seat memory control module supplies a ground at all times through a low reference circuit to the driver
seat memory switch. The module also supplies memory set and memory recall signal circuits to the seat
memory switch. When a memory recall switch is pressed, the signal circuit from the seat memory control
module is pulled low through the switch contacts and a series of resistors indicating the memory recall
request. In response to this signal, the seat memory control module commands the appropriate seat motors
to move to the pre-recorded seat positions stored in memory.

Refer to the Owner’s Manual for storing memory positions.

Auto Memory Recall and Easy Exit

The seat memory control module will not perform Auto Memory Seat Recall and Easy Exit functions unless
these options are enabled in vehicle personalization using the radio/HVAC controls.

Refer to Instruments and Controls/Vehicle Personalization in the Owner’s Manual for the following memory
personalization options:

Auto Memory Recall

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Easy Exit Options

The radio/HVAC controls reports the auto memory recall option settings to the seat memory control module
via serial data message. The module will then store the memory recall option setting and examine it before
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making a memory seat adjustment. The auto memory recall option setting stored within the module will not
change until the auto memory recall option setting in vehicle personalization is changed.
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© 2023 General Motors. All rights reserved.

2022 Buick Encore GX | Encore GX Service Manual N America 14739426 | Seats | Power Seats | Schematic and Routing Diagrams | Document ID: 5675240

Module Power, Ground, Serial Data, and Memory Controls (A45)

B+ B+ L
S47D O
C
X51A 4120 1370 634 Seat
Fuse Memory
Switch -
F1DA F37DA Block - Driver
D
E
10A 30A Instrument SET S
F01A F37A Panel C

2 5 1 6
840 1640 6817 614 5978 615
RD/BU RD/VT YE BU/GN BK/BU WH

X200 22 29 X501 1 2 3
Interior Lights
Dimming 614 5978 615
Schematics BU/GN BK/BU WH

X500 11 23 12
840 1640
RD/BU RD/VT

614 5978 615

BU/GN BK/BU WH

X301 20 2
Data Communication
Schematics X301 12 13 14

840 1640 5060 7530 614 5978 615

RD/BU RD/VT GN GN/WH BU/GN BK/BU WH

X1 1 2 X2 1 3 X6 15 11 12
K40D
B+ B+

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Seat
Memory
Control
Module -
Driver

X2 5
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450
BK
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G300
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© 2023 General Motors. All rights reserved.

4/26/23, 7:42 AM Passenger Seat Cushion Heater Replacement

2022 Buick Encore GX | | Seats |

Encore GX Service Manual N America 14739426 Seat Heating and Cooling |
Repair Instructions | Document ID: 5359040

Passenger Seat Cushion Heater Replacement

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Passenger Seat Cushion Heater Replacement
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Callout Component Name

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Warning: SIR Warning

Preliminary Procedures

1. Front Seat Cushion Cover and Pad Replacement

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2. Airbag Front Passenger Presence Module Replacement

1 Passenger Seat Cushion Heater

Warning: Replace the passenger presence system as a complete assembly to
prevent possible injury to the occupant. All the components in the service
kit are assembled and calibrated as a unit. Using only some of the
components in the service kit will cause the passenger presence system
to operate improperly.
Note:

Separate the seat cushion heater mat from the seat cushion pad by pulling
the heater mat away from the pad. Use a heat gun to loosen the glue :
moving slowly from one end to the other, slowly peeling the heater mat up
as you go. This makes removal easier and ensures minimum damage to
the underlying foam. Be careful not to use overly high temperatures or
hold the heat gun in one place for too long as this can damage the foam.
The front seat belt presence sensor and front seat cushion heater, if
equipped, are integral parts of the front seat cushion pad.
© 2023 General Motors. All rights reserved.

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4/26/23, 7:42 AM Passenger Seat Cushion Heater Replacement

Callout Component Name

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© 2023 General Motors. All rights reserved.

https://gsitlc.ext.gm.com/gsi/showDoc.do?pubName=Encore GX Service Manual N America 14739426&pubSectionName=Seats&language=1&pubObj… 2/2

4/26/23, 7:40 AM Passenger Seat Lumbar Control Switch Replacement

2022 Buick Encore GX | | Seats |

Encore GX Service Manual N America 14739426 Power Seats | Repair Instructions |
Document ID: 5359047

Passenger Seat Lumbar Control Switch Replacement

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Passenger Seat Lumbar Control Switch Replacement
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Callout Component Name

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Preliminary Procedure
Remove the passenger side of front seat cushion outer finish cover. Front Seat Cushion Outer
Finish Cover Replacement
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Passenger Seat Lumbar Control Switch

1 Procedure
Release the retaining tabs.

© 2023 General Motors. All rights reserved.

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 2022 Buick Encore GX | | Seats | Power Seats |
Encore GX Service Manual N America 14739426 Schematic and Routing Diagrams |
Document ID: 5675031

Passenger Seat Schematics

Figure 1: 8-Way Power Passenger Seat (A7M)
Figure 2: Power Lumbar (AT9)

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© 2023 General Motors. All rights reserved.

2022 Buick Encore GX | Encore GX Service Manual N America 14739426 | Seats | Power Seats | Schematic and Routing Diagrams | Document ID: 5675241

Power Lumbar (AL9)

L
O
C
B+
D
X51A E
Fuse S
C
F1DA Block -
10A Instrument
F01A Panel

840
RD/BU
X200 24

840
RD/BU
J353

1940
RD/VT

X301 5
1640
RD/VT

G
S65D

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Seat Lumbar
Support
Switch -
Driver

C B E
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611 610 450
BU VT BK

1 2
M53D
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Seat
M Lumbar
Support
Motor -
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Driver

G300
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© 2023 General Motors. All rights reserved.

2022 Buick Encore GX | Encore GX Service Manual N America 14739426 | Seats | Power Seats | Schematic and Routing Diagrams | Document ID: 5675243

Power Lumbar (AT9)

L
O
C
B+
D
X51A E
Fuse S
C
F1DA Block -
10A Instrument
F01A Panel

840
RD/BU

X200 24

840
RD/BU

J353

840
RD/BU

X302 6

1640
RD/VT

G
S65P

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Seat
Lumbar
Support
Switch -
Passenger

C B E
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211 210 550
BU VT BK

1 2
M53P
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Seat
M Lumbar
Support
Motor -
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Passenger

G301
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© 2023 General Motors. All rights reserved.

 2022 Buick Encore GX | | Seats | Power Seats |
Encore GX Service Manual N America 14739426 Diagnostic Information and Procedures |
Document ID: 5475570

Power Seat Malfunction (With Memory A45)

Diagnostic Instructions

Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
Review Strategy Based Diagnosis for an overview of the diagnostic approach.
Diagnostic Procedure Instructions provides an overview of each diagnostic category.

Diagnostic Fault Information

Short to Open/High Short to Signal

Circuit Ground Resistance Voltage Performance

Seat Memory Control Module B+

U0208 00, 1 U0208 00, 1 — —
Terminal 1 X1

Seat Memory Control Module B+

1 1 — —
Terminal 2 X1

B1735 59,

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B1740 59,
B1745 59,
B1750 59,
Front Vertical Up Switch Signal 2 — —
B1755 59,
B1760 59,
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B1815 59,
B1820 59
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B1735 59,
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B1740 59,
B1745 59,
B1750 59,
Front Vertical Down Switch Signal 2 — —
B1755 59,
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B1760 59,
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B1815 59,
B1820 59
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B1735 59,
B1740 59,
B1745 59,
B1750 59,
Rear Vertical Up Switch Signal 3 — —
B1755 59,
B1760 59,
B1815 59,
B1820 59

B1735 59,
B1740 59,
B1745 59,
B1750 59,
Rear Vertical Down Switch Signal 3 — —
B1755 59,
B1760 59,
B1815 59,
B1820 59

Horizontal Forward Switch Signal B1735 59, 4 — —

B1740 59,
B1745 59,
B1750 59,
B1755 59,
B1760 59,
© 2023 General Motors. All rights reserved.
 Short to Open/High Short to Signal
Circuit Ground Resistance Voltage Performance

B1815 59,
B1820 59

B1735 59,
B1740 59,
B1745 59,
B1750 59,
Horizontal Rearward Switch Signal 4 — —
B1755 59,
B1760 59,
B1815 59,
B1820 59

B1735 59,
B1740 59,
B1745 59,
B1750 59,
Recline Forward Switch Signal 5 — —
B1755 59,
B1760 59,
B1815 59,
B1820 59

B1735 59,

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B1740 59,
B1745 59,
B1750 59,
Recline Rearward Switch Signal 5 — —
B1755 59,
B1760 59,
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B1815 59,
B1820 59
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Driver Seat Front Vertical Motor Down B3920 00,
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B3920 02 2 B3920 01
Control B3920 0B

Driver Seat Front Vertical Motor Up B3920 00,

B3920 02 2 B3920 01
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Control B3920 0B
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Driver Seat Rear Vertical Motor Down B3920 00,

B3920 02 3 B3920 01
Control B3920 0B
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Driver Seat Rear Vertical Motor Up B3920 00,

B3920 02 3 B3920 01
Control B3920 0B

Driver Seat Horizontal Motor Forward B3920 00,

B3920 02 4 B3920 01
Control B3920 0B

Driver Seat Horizontal Motor Rearward B3920 00,

B3920 02 4 B3920 01
Control B3920 0B

Driver Seat Recline Motor Forward B3920 00,

B3920 02 5 B3920 01
Control B3920 0B

Driver Seat Recline Motor Rearward B3920 00,

B3920 02 5 B3920 01
Control B3920 0B

Seat Adjuster Switch Ground — 1 — —

Seat Memory Control Module Ground — U0208 00, 1 — —

1. All power seat functions are inoperative

2. The seat front vertical motor is inoperative
© 2023
3. The seat rear vertical motor General Motors. All rights reserved.
is inoperative
 Short to Open/High Short to Signal
Circuit Ground Resistance Voltage Performance

4. The seat horizontal motor is inoperative

5. The seat recline motor is inoperative

Circuit/System Description

Battery voltage is supplied at all times to the seat memory control module through a 20 A fuse located in the
rear body fuse block. This voltage is used by the module for logic power. Battery positive voltage is also
supplied at all times to the seat memory control module through a 30 A fuse located in the instrument panel
fuse block. This voltage is connected to a power rail internal to the seat memory control module and is used
to drive the power seat motors. Each seat motor is controlled by the seat memory control module by
applying power and ground through the control circuits to the motor.

All motors are reversible. For example, when the seat switch is operated to move the entire seat forward, the
switch signal circuit from the seat memory control module is pulled low indicating the entire seat forward
command. In response to this signal, the seat memory control module applies battery voltage through the
driver seat horizontal motor forward control circuit and ground through the driver seat horizontal motor
rearward control circuit to the motor. The motor runs to drive the entire seat forward until the switch is
released. Moving the entire seat rearward works similarly to moving the entire seat forward, except that
battery positive voltage and ground are applied on the opposite circuits causing the motor to run in the
opposite direction.

Reference Information

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Schematic Reference

Driver Seat Schematics

Connector End View Reference

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Master Electrical Component List
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Description and Operation
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Memory Seats Description and Operation

Electrical Information Reference

Circuit Testing
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Connector Repairs
Testing for Intermittent Conditions and Poor Connections
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Wiring Repairs

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

1. Ignition ON.
2. Verify the scan tool seat switch parameters listed below change between Inactive and Forward/Rearward
or Up/Down when pressing the appropriate switch.
Driver Seat Horizontal Switch
Driver Seat Cushion Front Vertical Switch
Driver Seat Cushion Rear Vertical Switch
Driver Seat Back Switch
⇒ If the parameter does not change
Refer to Circuit/System Testing – Driver Seat Adjuster Switch Circuit Test
⇓ If the parameter changes
3. Verify the seat directional motors listed below operate while operating the appropriate seat switches in
both directions.
M50D Seat Front Vertical Motor – Driver
M55D Seat Rear Vertical Motor – Driver
© 2023 General Motors. All rights reserved.
 M51D Seat Horizontal Motor – Driver
M56D Seat Recline Motor – Driver
⇒ If any seat motor does not operate
Refer to Circuit/System Testing – Seat Motor Control Circuit Test.
⇓ If all seat motors operate
4. All OK.

Circuit/System Testing
Driver Seat Adjuster Switch Circuit Test

1. Ignition OFF and all vehicle systems OFF, disconnect the harness connector at the S64D Seat Adjuster
Switch – Driver. It may take up to 2 min for all vehicle systems to power down.
2. Test for less than 10 Ω between the ground circuit terminal E and ground.
⇒ If 10 Ω or greater
2.1. Ignition Off.
2.2. Test for less than 2 Ω in the ground circuit end to end.
⇒ If 2 Ω or greater, repair the open/high resistance in the circuit.
⇒ If less than 2 Ω, repair the open/high resistance in the ground connection.
⇓ If less than 10 Ω
3. Install a 3 A fused jumper wire between the ground circuit terminal E and the appropriate signal circuit
terminal listed below, ignition ON.

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Front vertical up switch terminal A
Front vertical down switch terminal K
Rear vertical up switch terminal F
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Rear vertical down switch terminal J
Horizontal forward switch terminal D
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Horizontal rearward switch terminal C
Recline forward switch terminal H
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Recline rearward switch terminal G

4. Verify the appropriate scan tool seat switch parameter is Forward/Rearward or UP/Down.
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⇒ If not Forward/Rearward or UP/Down

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4.1. Ignition OFF, disconnect the X5 harness connector at the K40D Seat Memory Control Module –
Driver, ignition ON.
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4.2. Test for less than 1 V between the signal circuit and ground.
⇒ If 1 V or greater, repair the short to voltage on the circuit.
⇓ If less than 1 V
4.3. Ignition OFF.
4.4. Test for less than 2 Ω in the signal circuit end to end.
⇒ If 2 Ω or greater, repair the open/high resistance in the circuit.
⇒ If less than 2 Ω, replace the K40D Seat Memory Control Module – Driver.
⇓ If Forward/Rearward or UP/Down
5. Test or replace the S64D Seat Adjuster Switch – Driver.

Seat Motor Control Circuit Test

1. Ignition OFF, disconnect the X1 harness connector at the K40D Seat Memory Control Module – Driver,
ignition ON.
2. Verify that a test lamp illuminates between each B+ circuit terminal listed below and ground:
Terminal 1
Terminal 2
⇒ If the test lamp does not illuminate and the circuit fuse is good.
2.1. Ignition OFF.
2.2. Test for less than 2 Ω in the B+ circuit end to end.
© 2023 General Motors. All rights reserved.
 ⇒ If 2 Ω or greater, repair the open/high resistance in the circuit.
⇒ If less than 2 Ω, verify the circuit fuse is OK and there is voltage at the fuse.
⇒ If the test lamp does not illuminate and the circuit fuse is open.
2.1. Ignition OFF.
2.2. Test for infinite resistance between the B+ circuit and ground.
⇒ If less than infinite resistance, repair the short to ground on the circuit.
⇒ If infinite resistance, replace the K40D Seat Memory Control Module – Driver.
⇓ If the test lamp illuminates.
3. Ignition OFF, connect the X1 harness connector at the K40D Seat Memory Control Module – Driver and
disconnect the harness connector at the appropriate seat motor listed below:
M50D Seat Front Vertical Motor – Driver
M55D Seat Rear Vertical Motor – Driver
M51D Seat Horizontal Motor – Driver
M56D Seat Recline Motor – Driver
4. Connect a test lamp between control circuit terminal 1 and control circuit terminal 3, ignition ON.
Note: Once a seat motor is commanded On using the scan tool, the seat function may not work using
the seat adjuster switch until you back out of the scan tool Control Functions menu.
5. Verify the test lamp turns ON when commanding the seat motor in the Up/Down or Forward/Rearward
states with a scan tool.
⇒ If the test lamp remains OFF during either of the commands

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5.1. Ignition OFF, disconnect the X3 harness connector at the K40D Seat Memory Control Module –
Driver.
5.2. Test for infinite resistance between each control circuit and ground.
⇒ If less than infinite resistance, repair the short to ground on the circuit.
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⇓ If infinite resistance
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5.3. Test for less than 2 Ω in each control circuit end to end.
⇒ If 2 Ω or greater, repair the open/high resistance in the circuit.
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⇒ If less than 2 Ω, replace the K40D Seat Memory Control Module – Driver.
⇓ If the test lamp turns ON during each of the commands
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6. Test or replace the seat motor.

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Component Testing
Seat Adjuster Switch Test
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1. Ignition OFF, disconnect the harness connector at the S64D Seat Adjuster Switch – Driver.
2. Test for infinite resistance between the ground terminal E and each signal terminal with the switch in the
open position.
⇒ If less than infinite resistance
Replace the S64D Seat Adjuster Switch – Driver.
⇓ If infinite resistance
3. Test for less than 2 Ω between the ground terminal E and each signal terminal with the appropriate switch
in the closed position.
⇒ If 2 Ω or greater
Replace the S64D Seat Adjuster Switch – Driver.
⇓ If less than 2 Ω
4. All OK.

Seat Motor

1. Ignition OFF, disconnect the harness connector at the appropriate seat motor listed below:
M50D Seat Front Vertical Motor – Driver
M55D Seat Rear Vertical Motor – Driver
M51D Seat Horizontal Motor – Driver
M56D Seat Recline Motor – Driver
© 2023 General Motors. All rights reserved.
 Note: When performing the following tests, make sure that the seat is not already in the position the
test is attempting to produce.
2. Install a 30 A fused jumper wire between control terminal 1 and 12 V.
3. Momentarily install a jumper wire between control terminal 3 and ground. The seat motor should
momentarily perform the appropriate FORWARD/ REARWARD/ UP/ DOWN function.
⇒ If the motor does not perform the FORWARD/ REARWARD/ UP/ DOWN function
Replace the seat motor.
⇓ If the motor performs the FORWARD/ REARWARD/ UP/ DOWN function
4. Reverse the jumper wires; the motor should perform FORWARD/ REARWARD/ UP/ DOWN function.
⇒ If the motor does not perform the FORWARD/ REARWARD/ UP/ DOWN function
Replace the seat motor.
⇓ If the motor performs the FORWARD/ REARWARD/ UP/ DOWN function
5. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

Control Module References for K40D Seat Memory Control Module – Driver replacement, programming
and setup

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© 2023 General Motors. All rights reserved.

 2022 Buick Encore GX | | Seats | Power Seats |
Encore GX Service Manual N America 14739426 Diagnostic Information and Procedures |
Document ID: 5475563

Power Seat Malfunction (Without Memory A45)

Diagnostic Instructions

Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
Review Strategy Based Diagnosis for an overview of the diagnostic approach.
Diagnostic Procedure Instructions provides an overview of each diagnostic category.

Diagnostic Fault Information

Short to Open/High Short to Signal

Circuit Ground Resistance Voltage Performance

B+ 1 1 — —

Front Vertical Motor Down Control 1 2 — —

Front Vertical Motor Up Control 1 2 — —

Rear Vertical Motor Down Control 1 3 — —

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Rear Vertical Motor Up Control 1 3 — —

Horizontal Motor Forward Control 1 4 — —

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Horizontal Motor Rearward Control 1 4 — —
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Recline Motor Forward Control 1 5 — —
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Recline Motor Rearward Control 1 5 — —

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Ground — 1 — —
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1. All power seat functions are inoperative

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2. The seat front vertical motor is inoperative

3. The seat rear vertical motor is inoperative
4. The seat horizontal motor is inoperative
5. The seat recline motor is inoperative

Circuit/System Description

The driver seat without memory and the passenger seat are completely controlled through their respective
seat adjuster switches. Battery voltage is supplied at all times to the seat adjuster switch through a 30 A
fuse located in the instrument panel fuse block. When the seat switches are in an inactive state, the switch
contacts are closed to the switch ground circuit.

All seat motors are reversible. For example, when the seat horizontal forward switch is pressed to move the
entire seat forward, battery voltage is applied through the switch contacts and the seat horizontal motor
forward control circuit to the motor. With the horizontal motor rearward switch contacts closed to the switch
ground circuit, the motor runs in order to drive the entire seat forward until the switch is released. Moving
the entire seat rearward works similarly to moving the entire seat forward, except that battery voltage and
ground are applied on opposite circuits causing the motor to run in the opposite direction. All seat motors are
powered this way.

Reference Information
Schematic Reference

Driver Seat Schematics

Passenger Seat Schematics
© 2023 General Motors. All rights reserved.
 Connector End View Reference

Master Electrical Component List

Description and Operation

Power Seats System Description and Operation

Electrical Information Reference

Circuit Testing
Connector Repairs
Testing for Intermittent Conditions and Poor Connections
Wiring Repairs

Circuit/System Verification

1. Verify the appropriate driver or passenger seat directional motors listed below operate while operating
the seat switches in both directions.
M51 Seat Horizontal Motor
M50 Seat Front Vertical Motor
M55 Seat Rear Vertical Motor
M56 Seat Recline Motor
⇒ If all seat motors do not operate

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Refer to Circuit/System Testing – Seat Adjuster Switch Circuit Test.
⇒ If 1 or more seat motors operate but not all
Refer to Circuit/System Testing – Seat Motor Circuit Test.
⇓ If all seat motors operate
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2. All OK.
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Circuit/System Testing
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Seat Adjuster Switch Circuit Test

1. Ignition OFF and all vehicle systems OFF, disconnect the harness connector at the appropriate S64 Seat
Adjuster Switch. It may take up to 2 min for all vehicle systems to power down.
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2. Test for less than 10 Ω between the ground circuit terminal B and ground.
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⇒ If 10 Ω or greater
2.1. Ignition OFF.
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2.2. Test for less than 2 Ω in the ground circuit end to end.
⇒ If 2 Ω or greater, repair the open/high resistance in the circuit.
⇒ If less than 2 Ω, repair the open/high resistance in the ground connection.
⇓ If less than 10 Ω
3. Ignition ON.
4. Verify a test lamp illuminates between the B+ circuit terminal E and ground.
⇒ If the test lamp does not illuminate
4.1. Ignition OFF, remove the test lamp.
4.2. Test for infinite resistance between the B+ circuit and ground.
⇒ If less than infinite resistance, repair the short to ground on the circuit.
⇓ If infinite resistance
4.3. Test for less than 2 Ω in the B+ circuit end to end.
⇒ If 2 Ω or greater, repair the open/high resistance in the circuit.
⇒ If less than 2 Ω, verify the fuse is OK and there is voltage at the fuse.
⇓ If the test lamp illuminates
5. Test or replace the S64 Seat Adjuster Switch.

Seat Motor Circuit Test

© 2023 General Motors. All rights reserved.
 1. Ignition OFF, disconnect the harness connector at the appropriate seat motor listed below:
M51 Seat Horizontal Motor
M50 Seat Front Vertical Motor
M55 Seat Rear Vertical Motor
M56 Seat Recline Motor
2. Connect a test lamp between control circuit terminal 1 and control circuit terminal 3, ignition ON.
3. Verify the test lamp turns ON when commanding the seat motor Up and Down or Forward and Rearward
using the S64 Seat Adjuster Switch.
⇒ If the test lamp does not turn ON during either of the commands
3.1. Ignition OFF, disconnect the harness connector at the S64 Seat Adjuster Switch.
3.2. Test for infinite resistance between each control circuit and ground.
⇒ If less than infinite resistance, repair the short to ground on the circuit.
⇓ If infinite resistance
3.3. Test for less than 2 Ω in each control circuit end to end.
⇒ If 2 Ω or greater, repair the open/high resistance in the circuit.
⇒ If less than 2 Ω, test or replace the S64 Seat Adjuster Switch
⇓ If the test lamp turns ON during each of the commands
4. Test or replace the seat motor.

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Component Testing
Seat Adjuster Switch Test

1. Ignition OFF, disconnect the harness connector at the S64 Seat Adjuster Switch.
2. Test for infinite resistance between the B+ terminal E and each control terminal with the switch in the
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open position.
⇒ If less than infinite resistance
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Replace the S64 Seat Adjuster Switch.
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⇓ If infinite resistance
3. Test for less than 2 Ω between the B+ terminal E and each control terminal with the appropriate switch in
the closed position.
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⇒ If 2 Ω or greater
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Replace the S64 Seat Adjuster Switch.

⇓ If less than 2 Ω
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4. Test for less than 2 Ω between the ground terminal B and each control terminal with the switch in the
open position.
⇒ If 2 Ω or greater
Replace the S64 Seat Adjuster Switch.
⇓ If less than 2 Ω
5. All OK.

Seat Motor

1. Ignition OFF, disconnect the harness connector at the appropriate seat motor listed below:
M51 Seat Horizontal Motor
M50 Seat Front Vertical Motor
M55 Seat Rear Vertical Motor
M56 Seat Recline Motor
Note: When performing the following tests, make sure that the seat is not already in the position the
test is attempting to produce.
2. Install a 30 A fused jumper wire between control terminal 1 and 12 V.
3. Momentarily install a jumper wire between control terminal 3 and ground. The seat motor should
momentarily perform the appropriate FORWARD/ REARWARD/ UP/ DOWN function.
⇒ If the motor does not perform the FORWARD/ REARWARD/ UP/ DOWN function
Replace the motor.
© 2023 General Motors. All rights reserved.
 ⇓ If the motor performs the FORWARD/ REARWARD/ UP/ DOWN function
4. Reverse the jumper wires; the motor should perform FORWARD/ REARWARD/ UP/ DOWN function.
⇒ If the motor does not perform the FORWARD/ REARWARD/ UP/ DOWN function
Replace the motor.
⇓ If the motor performs the FORWARD/ REARWARD/ UP/ DOWN function
5. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

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© 2023 General Motors. All rights reserved.

 2022 Buick Encore GX | | Seats |
Encore GX Service Manual N America 14739426 Power Seats | Description and Operation |
Document ID: 2743057

Power Seats System Description and Operation

The driver and passenger power seat systems each consist of the following components:

Seat adjuster switch

Seat horizontal motor
Seat front vertical motor (If Equipped)
Seat rear vertical motor
Seat recline motor

Seat Motors

The seat switches provide both power and ground to the selected seat motors.

All of the seat motors operate independently of each other. Each motor contains an electronic circuit breaker
(PTC) that opens in the event of a circuit overload and will reset only after voltage has been removed from
the circuit. There are four seat position motors and two lumbar motors. These are the horizontal motor, front
vertical motor, rear vertical motor, and the seat back recline motor. The seat horizontal motor moves the
entire seat forward and rearward. The seat vertical motors may operate independently to tilt the front or rear
of the seat cushion up or down. Both motors can also run simultaneously to move the entire seat up or
down. The recline motor moves the angle of the seat back forward or rearward.

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Seat Operation

All seat motors are reversible. For example, when the seat horizontal forward switch is pressed to move the
entire seat forward, battery voltage is applied through the switch contacts and the seat horizontal motor
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forward control circuit to the motor. With the horizontal motor rearward switch contacts closed to the switch
ground circuit, the motor runs in order to drive the entire seat forward until the switch is released. Moving
the entire seat rearward works similarly to moving the entire seat forward, except that battery voltage and
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ground are applied on opposite circuits causing the motor to run in the opposite direction. All seat motors are
powered this way.
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© 2023 General Motors. All rights reserved.

2022 Buick Encore GX | | Seats | Seat Hardware, Trim, and Upholstery |
Encore GX Service Manual N America 14739426 Repair Instructions |
Document ID: 5439229

Rear Seat Armrest Bracket Replacement

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Rear Seat Armrest Bracket Replacement
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Callout Component Name
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Preliminary Procedure
Rear Seat Back Cushion Cover and Pad Replacement
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Rear Seat Armrest Bracket Bolt [2x]

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Caution: Refer to Fastener Caution.

1
Tighten
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10 Y (89 lb in)

2 Rear Seat Armrest Bracket

© 2023 General Motors. All rights reserved.

2022 Buick Encore GX | | Seats | Seat Hardware, Trim, and Upholstery |
Encore GX Service Manual N America 14739426 Repair Instructions |
Document ID: 5226004

Rear Seat Armrest Replacement

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Rear Seat Armrest Replacement
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Callout Component Name
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Preliminary Procedure
Rear Seat Armrest Support Finish Cover Replacement
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Rear Seat Armrest Bracket Bolt [2x]

Caution: Refer to Fastener Caution.
1
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Tighten
10 Y (89 lb in)

Rear Seat Armrest

2 1. Reposition the seat cover material to access the inner hinge cover.
2. Transfer components as necessary.

© 2023 General Motors. All rights reserved.

2022 Buick Encore GX | | Seats | Seat Hardware, Trim, and Upholstery |
Encore GX Service Manual N America 14739426 Repair Instructions |
Document ID: 5226010

Rear Seat Armrest Support Finish Cover Replacement

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Rear Seat Armrest Support Finish Cover Replacement

Callout Component Name

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Rear Seat Armrest Hinge Finish Cover
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Procedure

1 1. Fold down the 40% side seat back.

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2. Reposition the seat cover material to access the inner hinge cover.
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3. Remove the rear seat armrest hinge finish cover using a flat bladed tool.
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© 2023 General Motors. All rights reserved.

4/26/23, 7:27 AM Rear Seat Back Bolster Replacement

2022 Buick Encore GX | Encore GX Service Manual N America 14739426| Seats | Seat Hardware, Trim, and Upholstery |
Repair Instructions | Document ID: 5359851

Rear Seat Back Bolster Replacement

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Rear Seat Back Bolster Replacement

Callout Component Name

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Warning: Refer to SIR Warning.

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Warning: Do not repair or replace the seat stitching or seams in the seat back trim cover with
an internal mounted seat side airbag module. Replace the complete seat back trim
cover from the OEM. Non-OEM seat stitching may cause improper airbag deployment
which could result in personal injury.
Preliminary Procedures

1. Disable the SIR system. SIR Disabling and Enabling

2. Rear Seat Cushion Removal and Installation
3. Fold the rear seat back to the downward position.

1 Quarter Trim Panel Cover

Rear Seat Bolster Frame Bolt [2x]

Caution: Refer to Fastener Caution.
2
Tighten
9 Y (80 lb in)

3 © 2023 General Motors. All rights reserved.

Rear Seat Back Bolster

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4/26/23, 7:27 AM Rear Seat Back Bolster Replacement

Callout Component Name

Procedure

1. Disconnect the electrical connector.

2. Transfer components as necessary.
3. Enable the SIR System. SIR Disabling and Enabling

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4/26/23, 7:29 AM Rear Seat Back Carpet Replacement (40 Percent Seat)

2022 Buick Encore GX | Encore GX Service Manual N America 14739426| Seats | Seat Hardware, Trim, and Upholstery |
Repair Instructions | Document ID: 5236124

Rear Seat Back Carpet Replacement (40 Percent Seat)

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Rear Seat Back Cushion Carpet Replacement
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Callout Component Name

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Rear Seat Back Cushion Carpet

Procedure

1. Fold rear seat back cushion forward.

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2. Disengage any retainers from the seat back cushion frame.
3. Remove rear seat back cushion carpet.

© 2023 General Motors. All rights reserved.

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4/26/23, 7:28 AM Rear Seat Back Carpet Replacement (60 Percent Seat)

2022 Buick Encore GX | Encore GX Service Manual N America 14739426| Seats | Seat Hardware, Trim, and Upholstery |
Repair Instructions | Document ID: 5236122

Rear Seat Back Carpet Replacement (60 Percent Seat)

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Rear Seat Back Cushion Carpet Replacement
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Callout Component Name

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Rear Seat Back Cushion Carpet

Procedure

1. Fold rear seat back cushion forward.

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2. Disengage any retainers from the seat back cushion frame.
3. Remove rear seat back cushion carpet.

© 2023 General Motors. All rights reserved.

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4/26/23, 7:30 AM Rear Seat Back Cover and Pad Replacement (40 Percent Seat)

2022 Buick Encore GX | Encore GX Service Manual N America 14739426| Seats | Seat Hardware, Trim, and Upholstery |
Repair Instructions | Document ID: 5236952

Rear Seat Back Cover and Pad Replacement (40 Percent

Seat)
Removal Procedure

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1. Rear Seat Back Cushion (1) - 40% » Remove — Rear Seat Back Cushion Removal and
Installation

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4/26/23, 7:30 AM Rear Seat Back Cover and Pad Replacement (40 Percent Seat)

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2. Rear Seat Back Cushion Latch Release Handle Bezel (1) » Remove — Rear Seat Back Latch
Release Handle Bezel Replacement
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4/26/23, 7:30 AM Rear Seat Back Cover and Pad Replacement (40 Percent Seat)

3. Rear Seat Head Restraint (1) » Remove — Rear Seat Head Restraint Replacement

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4. Rear Seat Head Restraint Guide (1) » Remove — Rear Seat Head Restraint Guide Replacement
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© 2023 General Motors. All rights reserved.

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4/26/23, 7:30 AM Rear Seat Back Cover and Pad Replacement (40 Percent Seat)

5. Rear Seat Inner Hinge Finish Cover (1) » Remove

6. Rear Seat Back Outer Pivot Bolt (4) » Remove
7. Rear Seat Back Outer Pivot Bolt Bushing (3) » Remove
8. Rear Seat Back Outer Pivot Bolt Spring (2) » Remove

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9. Disengage the J-channel retainers from the seat back cushion frame.
10. Remove the rear seat back cushion cover and pad assembly (1) from the rear seat back
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cushion frame (2).

© 2023 General Motors. All rights reserved.

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4/26/23, 7:30 AM Rear Seat Back Cover and Pad Replacement (40 Percent Seat)

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11. Remove and DISCARD the hog rings.
12. Separate the rear seat back cushion cover (1) from the rear seat back cushion pad (2).
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Installation Procedure
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© 2023 General Motors. All rights reserved.

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4/26/23, 7:30 AM Rear Seat Back Cover and Pad Replacement (40 Percent Seat)

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1. Install the rear seat back cushion cover (1) to the rear seat back cushion pad (2).
2. Install the NEW hog rings.
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© 2023 General Motors. All rights reserved.

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4/26/23, 7:30 AM Rear Seat Back Cover and Pad Replacement (40 Percent Seat)

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3. Install the rear seat back cushion frame (2) to the rear seat back cushion cover and pad
assembly (1).
4. Engage the J-channel retainers to the seat back cushion frame.
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© 2023 General Motors. All rights reserved.

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4/26/23, 7:30 AM Rear Seat Back Cover and Pad Replacement (40 Percent Seat)

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5. Rear Seat Back Outer Pivot Bolt Spring (2) » Install
6. Rear Seat Back Outer Pivot Bolt Bushing (3) » Install
7. Rear Seat Back Outer Pivot Bolt (4) » Install and tighten 45 Y (33 lb ft)
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8. Rear Seat Inner Hinge Finish Cover (1) » Install

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© 2023 General Motors. All rights reserved.

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4/26/23, 7:30 AM Rear Seat Back Cover and Pad Replacement (40 Percent Seat)

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9. Rear Seat Head Restraint Guide (1) » Install — Rear Seat Head Restraint Guide Replacement
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10. Rear Seat Head Restraint (1) » Install — Rear Seat Head Restraint Replacement
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4/26/23, 7:30 AM Rear Seat Back Cover and Pad Replacement (40 Percent Seat)

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11. Rear Seat Back Cushion Latch Release Handle Bezel (1) » Install — Rear Seat Back Latch
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Release Handle Bezel Replacement
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© 2023 General Motors. All rights reserved.

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4/26/23, 7:30 AM Rear Seat Back Cover and Pad Replacement (40 Percent Seat)

12. Rear Seat Back Cushion (1) - 40% » Install — Rear Seat Back Cushion Removal and
Installation

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4/26/23, 7:29 AM Rear Seat Back Cover and Pad Replacement (60 Percent Seat with Armrest)

2022 Buick Encore GX | Encore GX Service Manual N America 14739426| Seats | Seat Hardware, Trim, and Upholstery |
Repair Instructions | Document ID: 5236935

Rear Seat Back Cover and Pad Replacement (60 Percent

Seat with Armrest)
Removal Procedure

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1. Rear Seat Back Cushion (1) - 60% » Remove — Rear Seat Back Cushion Removal and
Installation

© 2023 General Motors. All rights reserved.

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4/26/23, 7:29 AM Rear Seat Back Cover and Pad Replacement (60 Percent Seat with Armrest)

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2. Rear Seat Back Cushion Latch Release Handle Bezel (1) » Remove — Rear Seat Back Latch
Release Handle Bezel Replacement
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© 2023 General Motors. All rights reserved.

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4/26/23, 7:29 AM Rear Seat Back Cover and Pad Replacement (60 Percent Seat with Armrest)

3. Rear Seat Belt Opening Cover (1) » Remove — Rear Seat Belt Opening Cover Replacement

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4. Rear Seat Head Restraint (1) » Remove — Rear Seat Head Restraint Replacement
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© 2023 General Motors. All rights reserved.

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4/26/23, 7:29 AM Rear Seat Back Cover and Pad Replacement (60 Percent Seat with Armrest)

5. Rear Seat Head Restraint Guide (1) » Remove — Rear Seat Head Restraint Guide Replacement

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6. Rear Seat Armrest (2) » Remove — Rear Seat Armrest Replacement

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© 2023 General Motors. All rights reserved.

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4/26/23, 7:29 AM Rear Seat Back Cover and Pad Replacement (60 Percent Seat with Armrest)

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7. Rear Seat Back Outer Pivot Bolt (1) » Remove
8. Rear Seat Back Outer Pivot Bolt Bushing (2) » Remove
9. Rear Seat Back Outer Pivot Bolt Spring (3) » Remove
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10. Rear Seat Inner Hinge Finish Cover (4) » Remove

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© 2023 General Motors. All rights reserved.

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4/26/23, 7:29 AM Rear Seat Back Cover and Pad Replacement (60 Percent Seat with Armrest)

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11. Disengage the J-channel retainers from the seat back cushion frame.
12. Remove the rear seat back cushion cover and pad assembly (1) from the rear seat back
cushion frame (2).
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© 2023 General Motors. All rights reserved.

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4/26/23, 7:29 AM Rear Seat Back Cover and Pad Replacement (60 Percent Seat with Armrest)

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13. Remove and DISCARD the hog rings.
14. Separate the rear seat back cushion cover (1) from the rear seat back cushion pad (2).
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Installation Procedure
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4/26/23, 7:29 AM Rear Seat Back Cover and Pad Replacement (60 Percent Seat with Armrest)

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1. Install the rear seat back cushion cover (1) to the rear seat back cushion pad (2).
2. Install the NEW hog rings.
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© 2023 General Motors. All rights reserved.

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4/26/23, 7:29 AM Rear Seat Back Cover and Pad Replacement (60 Percent Seat with Armrest)

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3. Install the rear seat back cushion frame (2) to the rear seat back cushion cover and pad
assembly (1).
4. Engage the J-channel retainers to the seat back cushion frame.
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© 2023 General Motors. All rights reserved.

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4/26/23, 7:29 AM Rear Seat Back Cover and Pad Replacement (60 Percent Seat with Armrest)

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5. Rear Seat Inner Hinge Finish Cover (4) » Install
6. Rear Seat Back Outer Pivot Bolt Spring (3) » Install
7. Rear Seat Back Outer Pivot Bolt Bushing (2) » Install
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8. Rear Seat Back Outer Pivot Bolt (4) » Install and tighten 45 Y (33 lb ft)
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4/26/23, 7:29 AM Rear Seat Back Cover and Pad Replacement (60 Percent Seat with Armrest)

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9. Rear Seat Armrest (2) » Install — Rear Seat Armrest Replacement
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10. Rear Seat Head Restraint Guide (1) » Install — Rear Seat Head Restraint Guide Replacement
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4/26/23, 7:29 AM Rear Seat Back Cover and Pad Replacement (60 Percent Seat with Armrest)

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11. Rear Seat Head Restraint (1) » Install — Rear Seat Head Restraint Replacement
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rd
ca

© 2023 General Motors. All rights reserved.

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4/26/23, 7:29 AM Rear Seat Back Cover and Pad Replacement (60 Percent Seat with Armrest)

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12. Rear Seat Belt Opening Cover (1) » Install — Rear Seat Belt Opening Cover Replacement
ia
rd
ca

© 2023 General Motors. All rights reserved.

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4/26/23, 7:29 AM Rear Seat Back Cover and Pad Replacement (60 Percent Seat with Armrest)

13. Rear Seat Back Cushion Latch Release Handle Bezel (1) » Install — Rear Seat Back Latch
Release Handle Bezel Replacement

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ia

14. Rear Seat Back Cushion (1) - 60% » Install — Rear Seat Back Cushion Removal and
Installation
rd
ca

© 2023 General Motors. All rights reserved.

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4/26/23, 7:29 AM Rear Seat Back Cover and Pad Replacement (60 Percent Seat without Armrest)

2022 Buick Encore GX | Encore GX Service Manual N America 14739426| Seats | Seat Hardware, Trim, and Upholstery |
Repair Instructions | Document ID: 5236951

Rear Seat Back Cover and Pad Replacement (60 Percent

Seat without Armrest)
Removal Procedure

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1. Rear Seat Back Cushion (1) - 60% » Remove — Rear Seat Back Cushion Removal and
Installation

© 2023 General Motors. All rights reserved.

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4/26/23, 7:29 AM Rear Seat Back Cover and Pad Replacement (60 Percent Seat without Armrest)

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2. Rear Seat Back Cushion Latch Release Handle Bezel (1) » Remove — Rear Seat Back Latch
Release Handle Bezel Replacement
gn
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rd
ca

© 2023 General Motors. All rights reserved.

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4/26/23, 7:29 AM Rear Seat Back Cover and Pad Replacement (60 Percent Seat without Armrest)

3. Rear Seat Belt Opening Cover (1) » Remove — Rear Seat Belt Opening Cover Replacement

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4. Rear Seat Head Restraint (1) » Remove — Rear Seat Head Restraint Replacement
ia
rd
ca

© 2023 General Motors. All rights reserved.

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4/26/23, 7:29 AM Rear Seat Back Cover and Pad Replacement (60 Percent Seat without Armrest)

5. Rear Seat Head Restraint Guide (1) » Remove — Rear Seat Head Restraint Guide Replacement

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6. Rear Seat Back Outer Pivot Bolt (1) » Remove

7. Rear Seat Back Outer Pivot Bolt Bushing (2) » Remove
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8. Rear Seat Back Outer Pivot Bolt Spring (3) » Remove

9. Rear Seat Inner Hinge Finish Cover (4) » Remove
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4/26/23, 7:29 AM Rear Seat Back Cover and Pad Replacement (60 Percent Seat without Armrest)

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10. Disengage the J-channel retainers from the seat back cushion frame.
11. Remove the rear seat back cushion cover and pad assembly (1) from the rear seat back
cushion frame (2).
ia
rd
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4/26/23, 7:29 AM Rear Seat Back Cover and Pad Replacement (60 Percent Seat without Armrest)

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12. Remove and DISCARD the hog rings.
13. Separate the rear seat back cushion cover (1) from the rear seat back cushion pad (2).
ia

Installation Procedure
rd
ca

© 2023 General Motors. All rights reserved.

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4/26/23, 7:29 AM Rear Seat Back Cover and Pad Replacement (60 Percent Seat without Armrest)

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1. Install the rear seat back cushion cover (1) to the rear seat back cushion pad (2).
2. Install the NEW hog rings.
ia
rd
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4/26/23, 7:29 AM Rear Seat Back Cover and Pad Replacement (60 Percent Seat without Armrest)

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3. Install the rear seat back cushion frame (2) to the rear seat back cushion cover and pad
assembly (1).
4. Engage the J-channel retainers to the seat back cushion frame.
ia
rd
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© 2023 General Motors. All rights reserved.

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4/26/23, 7:29 AM Rear Seat Back Cover and Pad Replacement (60 Percent Seat without Armrest)

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5. Rear Seat Inner Hinge Finish Cover (4) » Install
6. Rear Seat Back Outer Pivot Bolt Spring (3) » Install
7. Rear Seat Back Outer Pivot Bolt Bushing (2) » Install
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8. Rear Seat Back Outer Pivot Bolt (4) » Install and tighten 45 Y (33 lb ft)
rd
ca

© 2023 General Motors. All rights reserved.

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4/26/23, 7:29 AM Rear Seat Back Cover and Pad Replacement (60 Percent Seat without Armrest)

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9. Rear Seat Head Restraint Guide (1) » Install — Rear Seat Head Restraint Guide Replacement
gn
ia
rd
ca

10. Rear Seat Head Restraint (1) » Install — Rear Seat Head Restraint Replacement
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4/26/23, 7:29 AM Rear Seat Back Cover and Pad Replacement (60 Percent Seat without Armrest)

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11. Rear Seat Belt Opening Cover (1) » Install — Rear Seat Belt Opening Cover Replacement
ia
rd
ca

© 2023 General Motors. All rights reserved.

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4/26/23, 7:29 AM Rear Seat Back Cover and Pad Replacement (60 Percent Seat without Armrest)

12. Rear Seat Back Cushion Latch Release Handle Bezel (1) » Install — Rear Seat Back Latch
Release Handle Bezel Replacement

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ia

13. Rear Seat Back Cushion (1) - 60% » Install — Rear Seat Back Cushion Removal and
Installation
rd
ca

© 2023 General Motors. All rights reserved.

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2022 Buick Encore GX | | Seats | Seat Hardware, Trim, and Upholstery |
Encore GX Service Manual N America 14739426 Repair Instructions |
Document ID: 5363203

Rear Seat Back Cushion Removal and Installation (40 Percent

Seat)

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Rear Seat Back Cushion Removal and Installation
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Callout Component Name
ag

Preliminary Procedures

1. Rear Seat Cushion Removal and Installation

i

2. Rear Seat Back Bolster - Left Side » Remove — Rear Seat Back Bolster Replacement
rd

Rear Seat Back Cushion

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1. Fold the rear seat back cushion assembly forward.

1
2. Pull up on the outer side of the rear seat back cushion and remove the rear seat back
cushion from the bracket and hinge.

© 2023 General Motors. All rights reserved.

2022 Buick Encore GX | | Seats | Seat Hardware, Trim, and Upholstery |
Encore GX Service Manual N America 14739426 Repair Instructions |
Document ID: 5363202

Rear Seat Back Cushion Removal and Installation (60 Percent

Seat)

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Rear Seat Back Cushion Removal and Installation
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Callout Component Name

Preliminary Procedures
i
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1. Rear Seat Cushion Removal and Installation

2. Rear Seat Back Cushion – 40 Percent Seat » Remove — Rear Seat Back Cushion Removal and
Installation
ca

3. Rear Seat Back Bolster - Right Side » Remove — Rear Seat Back Bolster Replacement

Rear Seat Back Cushion

1. Fold the rear seat back cushion assembly forward.

1
2. Pull up on the outer side of the rear seat back cushion and remove the rear seat back
cushion from the bracket and hinge.

© 2023 General Motors. All rights reserved.

4/26/23, 7:30 AM Rear Seat Back Frame Replacement (40%)

2022 Buick Encore GX | Encore GX Service Manual N America 14739426| Seats | Seat Hardware, Trim, and Upholstery |
Repair Instructions | Document ID: 5236956

Rear Seat Back Frame Replacement (40%)

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Rear Seat Back Cushion Frame Replacement
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Callout Component Name

rd

Preliminary Procedure
Rear Seat Back Cushion Cover and Pad – 40 Percent Seat » Remove — Rear Seat Back Cushion
Cover and Pad Replacement
ca

Note: Remove the cover and pad as an assembly. Do not separate the cover from the pad.

Rear Seat Back Cushion Frame

1 Procedure
Transfer components as necessary.

© 2023 General Motors. All rights reserved.

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4/26/23, 7:30 AM Rear Seat Back Frame Replacement (60%)

2022 Buick Encore GX | Encore GX Service Manual N America 14739426| Seats | Seat Hardware, Trim, and Upholstery |
Repair Instructions | Document ID: 5236953

Rear Seat Back Frame Replacement (60%)

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Rear Seat Back Cushion Frame Replacement
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Callout Component Name

rd

Preliminary Procedure
Rear Seat Back Cushion Cover and Pad – 60 Percent Seat » Remove — Rear Seat Back Cushion
Cover and Pad Replacement
ca

Note: Remove the cover and pad as an assembly. Do not separate the cover from the pad.

Rear Seat Back Cushion Frame

1 Procedure
Transfer components as necessary.

© 2023 General Motors. All rights reserved.

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4/26/23, 7:31 AM Rear Seat Back Frame Replacement (With Armrest, 60%)

2022 Buick Encore GX | Encore GX Service Manual N America 14739426| Seats | Seat Hardware, Trim, and Upholstery |
Repair Instructions | Document ID: 5236958

Rear Seat Back Frame Replacement (With Armrest, 60%)

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Rear Seat Back Cushion Frame Replacement
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Callout Component Name

rd

Preliminary Procedure
Rear Seat Back Cushion Cover and Pad – 60 Percent Seat with Armrest » Remove — Rear Seat
Back Cushion Cover and Pad Replacement
ca

Note: Remove the cover and pad as an assembly. Do not separate the cover from the pad.

Rear Seat Back Cushion Frame

1 Procedure
Transfer components as necessary.

© 2023 General Motors. All rights reserved.

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4/26/23, 7:31 AM Rear Seat Back Latch Release Handle Bezel Replacement

2022 Buick Encore GX | Encore GX Service Manual N America 14739426| Seats | Seat Hardware, Trim, and Upholstery |
Repair Instructions | Document ID: 5225106

Rear Seat Back Latch Release Handle Bezel Replacement

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Rear Seat Back Latch Release Handle Bezel Replacement
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Callout Component Name

rd

Rear Seat Back Latch Release Handle Bezel

Procedure
1
Using a suitable flat-bladed tool, push inward on the rear tabs while pulling upward
ca

from the rear of the bezel to release it from the seat.

© 2023 General Motors. All rights reserved.

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4/26/23, 7:28 AM Rear Seat Back Latch Replacement (40 Percent Seat)

2022 Buick Encore GX | Encore GX Service Manual N America 14739426| Seats | Seat Hardware, Trim, and Upholstery |
Repair Instructions | Document ID: 5226001

Rear Seat Back Latch Replacement (40 Percent Seat)

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Rear Seat Back Latch Replacement
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Callout Component Name

rd

Preliminary Procedure
Rear Seat Back Cushion Cover and Pad Replacement
Note: Remove cover and pad as an assembly. Please do not separate them.
ca

Rear Seat Back Latch Bolt [2x]

Caution: Fastener Caution
1
Tighten
45 Y (33 lb ft)

Rear Seat Back Latch

2 Procedure
Remove the cloth covering the latch.

© 2023 General Motors. All rights reserved.

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4/26/23, 7:27 AM Rear Seat Back Latch Replacement (60 Percent Seat)

2022 Buick Encore GX | Encore GX Service Manual N America 14739426| Seats | Seat Hardware, Trim, and Upholstery |
Repair Instructions | Document ID: 5225985

Rear Seat Back Latch Replacement (60 Percent Seat)

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Rear Seat Back Latch Replacement
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Callout Component Name

rd

Preliminary Procedure
Rear Seat Back Cushion Cover and Pad Replacement
Note: Remove cover and pad as an assembly. Please do not separate them.
ca

Rear Seat Back Latch Bolt [2x]

Caution: Fastener Caution
1
Tighten
45 Y (33 lb ft)

Rear Seat Back Latch

2 Procedure
Remove the cloth covering the latch.

© 2023 General Motors. All rights reserved.

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4/26/23, 7:28 AM Rear Seat Belt Opening Cover Replacement

2022 Buick Encore GX | Encore GX Service Manual N America 14739426| Seats | Seat Hardware, Trim, and Upholstery |
Repair Instructions | Document ID: 5225107

Rear Seat Belt Opening Cover Replacement

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Rear Seat Belt Opening Cover Replacement
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Callout Component Name

rd

Rear Seat Belt Opening Cover

1 1. Using a suitable flat-bladed tool, release the rear seat belt opening cover.
ca

2. Carefully remove the belt from the cover through the slot.

© 2023 General Motors. All rights reserved.

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4/26/23, 7:27 AM Rear Seat Cushion Cover and Pad Replacement

2022 Buick Encore GX | Encore GX Service Manual N America 14739426| Seats | Seat Hardware, Trim, and Upholstery |
Repair Instructions | Document ID: 5236961

Rear Seat Cushion Cover and Pad Replacement

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Rear Seat Cushion Cover and Pad Replacement
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Callout Component Name

rd

Preliminary Procedure
Rear Seat Cushion Removal and Installation
ca

Rear Seat Cushion Cover

Note: When installing the rear seat cushion cover, pull the cover tightly in all
corners to ensure that no creasing occurs.
Procedure
1
1. If euipped, disconnect and unclip the electrical connectors.
2. Remove the hog rings.
3. Pull the cover away from the pad to disengage any retainers.

Rear Seat Cushion Pad

2 Procedure
Transfer components as necessary.

© 2023 General Motors. All rights reserved.

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2022 Buick Encore GX | | Seats | Seat Hardware, Trim, and Upholstery |
Encore GX Service Manual N America 14739426 Repair Instructions |
Document ID: 5225102

Rear Seat Cushion Removal and Installation

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Rear Seat Cushion Removal and Installation
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Callout Component Name
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Rear Seat Cushion

Procedure
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1. Insert a hand driver over 300 mm (12 in) next to the inboard side of each wire loop and
push down, using the floor as leverage, to disengage the retainers. Then, pull up on the
front of the seat cushion and lift out of the vehicle.
ca

2. Pull up the rear seat cushion from the hooks located at the rear of the rear seat cushion
and lift out of the vehicle.
3. Remove the lower rear center seat belt retractor nut. Rear Center Seat Belt Retractor
1
Replacement
4. Inspect each high retention retainer and sheet metal interface for flushness. Replace a
retainer with new one as required if damage occurs during removal, but preferably
discard the old retainer after removal and replace it with new one.
5. After removal of the retainers, the sheet metal may be slightly deformed. Use a suitable
tool to return the sheet metal back to its original flat appearance.
6. When installing new plastic retainers on the front of the seat, ONLY seat the retainer to
the first click, otherwise the insertion force into the sheet metal will be greatly increased.

© 2023 General Motors. All rights reserved.

4/26/23, 7:27 AM Rear Seat Head Restraint Guide Replacement

2022 Buick Encore GX | Encore GX Service Manual N America 14739426| Seats | Seat Hardware, Trim, and Upholstery |
Repair Instructions | Document ID: 5225112

Rear Seat Head Restraint Guide Replacement

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Rear Seat Head Restraint Guide Replacement
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Callout Component Name

rd

Procedure
Rear Seat Head Restraint Replacement
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Rear Seat Head Restraint Guide [2x]

Procedure
1 Using a suitable flat-bladed tool, slide the tool on the inside of the guide until it finds
the slot. Then push the tool forward pulling the guide tab inward, while pulling
upward to remove the guide from the seat back frame.

© 2023 General Motors. All rights reserved.

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2022 Buick Encore GX | | Seats | Seat Hardware, Trim, and Upholstery |
Encore GX Service Manual N America 14739426 Repair Instructions |
Document ID: 5225122

Rear Seat Head Restraint Replacement

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Rear Seat Head Restraint Replacement

Callout Component Name

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Rear Seat Head Restraint
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Procedure

1. Lower the rear seat back forward to gain space between the head restraint and the roof.
i

1 2. Depress the large button on the head restraint guide and raise the head restraint to the
rd

full up position.
3. Depress the smaller button on the opposite head restraint guide and pull upward to
remove from the seat.
ca

© 2023 General Motors. All rights reserved.

2022 Buick Encore GX | | Seats | Seat Hardware, Trim, and Upholstery |
Encore GX Service Manual N America 14739426 Repair Instructions |
Document ID: 5236984

Rear Seat Hinge Finish Cover Replacement

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Rear Seat Hinge Finish Cover Replacement

Callout Component Name

n
Preliminary Procedure
ag

Rear Seat Back Cushion - Both Sides » Remove — Rear Seat Back Cushion Removal and Installation

1 Rear Seat Hinge Finish Cover Retainer

i
rd

2 Rear Seat Hinge Finish Cover

ca

© 2023 General Motors. All rights reserved.

2022 Buick Encore GX | Encore GX Service Manual N America 14739426 | Seats | Power Seats | Schematic and Routing Diagrams | Document ID: 5739251

Seat Adjuster Switch and Position Motors (A45)

L
S64D O
Seat C
Adjuster
Switch -
Driver D
E
S
C

A K F J D C H G E

1518 1520 1519 1521 1522 1523 1269 1270 450

GN/BN BU/VT YE YE/BU YE/BN GY/GN GY/BK GN/GY BK

X5 9 10 19 20 7 8 21 22
K40D
Seat
Memory
Control
Module -
Driver

X5 1 12 X3 3 4 X5 25 X3 5 6 X5 11 X3 11 12 X5 26 X3 1 2

3298 557 286 287 568 282 283 569 285 284 570 276 277

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WH/RD BN/WH GN/BN BU/VT YE/BU YE GY/BU GN YE/BU GY/GN WH/BK GN/YE BU/YE

J369

3298 3298 3298 3298

WH/RD WH/RD
.c WH/RD WH/RD

2 4 3 1 4 2 3 1 4 2 3 1 2 4 1 3
M50D M55D M51D M56D
n
Seat Front Seat Rear Seat Seat
M Vertical M Vertical M Horizontal M Recline
Motor - Motor - Motor - Motor -
Driver Driver Driver Driver
ag

G301
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© 2023 General Motors. All rights reserved.

 2022 Buick Encore GX | | Seats | Power Seats |
Encore GX Service Manual N America 14739426 Diagnostic Information and Procedures |
Document ID: 5235795

Symptoms - Power Seats

Note: The following steps must be completed before using the symptom tables.

1. Perform the Diagnostic System Check - Vehicle before using the Symptom Tables in order to verify that all of
the following are true:
There are no DTCs set.
The control modules can communicate via the serial data link.
2. Review the system operation in order to familiarize yourself with the system functions. Refer to the following
system descriptions:
Lumbar Support Description and Operation
Memory Seats Description and Operation
Power Seats System Description and Operation

Visual/Physical Inspection

Inspect for aftermarket devices which could affect the operation of the system. Refer to Checking
Aftermarket Accessories.
Inspect the easily accessible or visible system components for obvious damage or conditions which
could cause the symptom.

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Intermittent

Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for
Intermittent Conditions and Poor Connections.
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Symptom List
n
Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom:
ag

Lumbar Support Malfunction

Memory Seat Feature Malfunction
Power Seat Malfunction
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© 2023 General Motors. All rights reserved.

4/26/23, 7:43 AM Symptoms - Seat Heating and Cooling

2022 Buick Encore GX | | Seats | Seat Heating and Cooling |

Encore GX Service Manual N America 14739426
Diagnostic Information and Procedures | Document ID: 5217175

Symptoms - Seat Heating and Cooling

Note: The following steps must be completed before using the symptom tables.

1. When diagnosing a heated seat system condition perform the Diagnostic System Check - Vehicle,
before using the symptom tables in order to verify that all of the following are true:
There are no DTCs set.
The control module(s) can communicate via the serial data link.
2. Review the system operation in order to familiarize yourself with the system functions. Refer to
Heated Seats Description and Operation.

Visual/Physical Inspection

Inspect for aftermarket devices which could affect the operation of the power seats. Refer to
Checking Aftermarket Accessories.

om
Inspect the easily accessible or visible system components for obvious damage or conditions
which could cause the symptom.
Inspect the seat adjuster track for conditions which may cause binding or objects within the
seat adjustment range which obstruct movement or interfere with wiring.

Intermittent .c
Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to
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Testing for Intermittent Conditions and Poor Connections.

Symptom List
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Refer to the Front Heated Seat Malfunction diagnostic procedure in order to diagnose the
symptom.
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© 2023 General Motors. All rights reserved.

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