26/10/22, 8:52 Print Article

2002 Chevrolet Blazer

Powertrain Diagnostics & Repair / Transmissions / Automatic Trans / AUTOMATIC
TRANSMISSION SERVICING

APPLICATION

TRANSMISSION APPLICATION

Application Transmission Model

Chevrolet

S10 Pickup 4L60E (M30)

Blazer - Jimmy Canadian 4L60E (M30)

GMC Sonoma 4L60E (M30)

TRANSFER CASE APPLICATION

Application 1 Transfer Case Model

Chevrolet

Blazer - Jimmy Canadian NV233 Or NV236

S10 Pickup NV233 Or NV236

GMC Sonoma NV233 Or NV236

1
NV233 is selectable operation; NV236 is automatic operation.

IDENTIFICATION

OIL PAN GASKET

https://crs.mymitchell.com/PrintArticle.aspx?secIDs=&Id=0.3289617785768051 1/70
26/10/22, 8:52 Print Article
Fig. 1: Identifying Oil Pan Gasket (Hydra-Matic 4L60-E)

LUBRICATION

SERVICE INTERVALS

Transmission
Check transmission fluid level at each engine oil change. Under normal driving conditions, change transmission fluid and filter every 50,000
miles. Under severe driving conditions, change transmission fluid and filter every 15,000 miles.

Transfer Case
Check transfer case fluid level at each engine oil change. Under normal driving conditions, change transfer case fluid every 50,000 miles.

CHECKING FLUID LEVELS

CAUTION: Do not overfill. Transmission temperature must be at least 180°F (82°C) when checking fluid level. If cold, fluid level will
rise from ADD 1 pt. or .5L to FULL mark on dipstick as transmission reaches normal operating temperature.

Transmission
With vehicle parked on a level surface and engine at idle, move range selector lever through all ranges, ending in Park. Remove dipstick,
wipe clean and check fluid level. Fluid level should be between ADD 1 pt. and FULL marks on dipstick. If vehicle has been driven for
extended period of time at high speed, in city traffic or pulling a trailer, an accurate fluid level cannot be immediately determined. Allow
transmission to cool for about 30 minutes after vehicle is parked, then check fluid level. Add appropriate fluid as necessary. See
RECOMMENDED FLUIDS.

Transfer Case
Remove fill plug. Check oil level. If oil level is even with bottom of fill plug opening, level is okay. If level is lower than bottom of fill plug
opening, add appropriate lubricant as necessary. See RECOMMENDED FLUIDS.

https://crs.mymitchell.com/PrintArticle.aspx?secIDs=&Id=0.3289617785768051 2/70
26/10/22, 8:52 Print Article
RECOMMENDED FLUIDS
Transmissions use Dexron-III ATF. Manual transfer case uses Dexron-III ATF. Automatic transfer case uses (Auto-Trak II Fluid GM P/N
12378508).

Transmission
Manufacturer recommends Dexron-III ATF.

Transfer Case
Manufacturer recommends Dexron-III ATF for NV233. Manufacturer recommends Auto-Trak II Fluid (GM P/N 12378508) for NV236.

FLUID CAPACITIES

Transmission
The following refill capacities given are approximate. Correct fluid level should always be determined by marks on dipstick, rather than
amount of fluid added. DO NOT overfill. See TRANSMISSION FLUID CAPACITIES table.

TRANSMISSION FLUID CAPACITIES

Application Refill - Qts. (L) Dry Fill - Qts. (L)

4L60-E 5.0 (4.8) 11.0 (10.6)

Transfer Case
The following refill capacities given are approximate. Correct fluid level should always be determined by level of fluid at fill hole, rather than
amount of fluid added. DO NOT overfill. See TRANSFER CASE FLUID CAPACITIES table.

TRANSFER CASE FLUID CAPACITIES

Application Capacity - Qts. (L)

NV233 1.06 (1.0)

NV236 2.0 (1.9)

DRAINING & REFILLING

NOTE: Transmission may be equipped with a reusable oil pan gasket. Reusable oil pan gaskets are constructed of rubber with
metal or plastic backing. On transmissions equipped with reusable gasket, sealing surface of oil pan is flat. Transmissions
not equipped with reusable-type gasket have a ridge on sealing surface of oil pan must have a new gasket every time pan
is removed. Clean reusable gasket with solvent. Inspect reusable gasket for damage and replace as necessary. Using any
other type of gasket in place of reusable gasket may result in fluid leaks.

NOTE: Tools required: Transmission Assembly Lubricant (J-36850).

Transmission

1. Raise and support vehicle. Loosen transmission oil pan bolts. Pry pan loose and allow fluid to drain. Remove oil pan, gasket and
filter or filter screen. Replace paper element filter, if equipped. See Fig. 2.
2. Clean oil pan with solvent, and blow dry with compressed air. Install oil pan and gasket. Use NEW pan gasket if transmission is not
equipped with reusable-type gasket. Tighten transmission oil pan bolts to specification. See TORQUE SPECIFICATIONS. Fill
transmission with appropriate fluid to proper level. See RECOMMENDED FLUIDS and FLUID CAPACITIES .

https://crs.mymitchell.com/PrintArticle.aspx?secIDs=&Id=0.3289617785768051 3/70
26/10/22, 8:52 Print Article
Fig. 2: Removing & Installing Filter & Seal

Transfer Case
Remove fill and drain plugs from transfer case. After fluid has drained, reinstall drain plug and tighten to specification. See TORQUE
SPECIFICATIONS. Fill transfer case with appropriate fluid to proper level. See RECOMMENDED FLUIDS and FLUID CAPACITIES . Install
transfer case fill plug and tighten to specification.

OIL COOLER FLUSHING

NOTE: Do not use solutions that contain alcohol or glycol. Use of solutions that contain alcohol or glycol may damage flushing
equipment, oil cooler components and/or transmission components.

CAUTION: Flushing Solution (J-35944-22) is environmentally safe, yet powerful enough to cut through transmission fluid to dislodge
any contaminants from the cooler. The safety precautions on the label regarding potential skin and eye irritations
associated with prolonged exposure are typical precautions that apply to many similar cleaning solutions. It should be
noted that according to General Motors, use of other non-approved fluids for cooler flushing can have an adverse reaction
to the seals inside the transmission.

Preparation

1. After the repair or replacement transmission is installed in the vehicle, do not reconnect the oil cooler pipes.
2. Remove the fill cap (9) on the Transmission Oil Cooler and Line Flusher (J-35944-A) and fill the flusher tank (4) with 20-21 oz. (0.6L)
of flushing solution using the measuring cup (6). DO NOT overfill. Install the fill cap (9) on the flusher and pressurize the flusher tank
(4) to 80-100 psi (550-700 kPa), using the shop air supply at the tank air valve (9). See Fig. 3.

https://crs.mymitchell.com/PrintArticle.aspx?secIDs=&Id=0.3289617785768051 4/70
26/10/22, 8:52 Print Article
3. Connect the flusher discharge hose (5) to the oil cooler return pipe (top connector) (may require J-35944-600). Clip the discharge
hose (5) onto the oil drain container. Attach the flusher to the undercarriage of the vehicle with the hook provided, and connect the
flushing system feed supply hose (3) from the flusher to the oil cooler feed pipe (bottom connector) (may require J-35944-600). See
Fig. 4.
4. With the water supply valve (1) on the flusher in the OFF position, connect the water supply hose (7) from the flusher to the water
supply at the faucet. See Fig. 3 and Fig. 4 . Turn ON the water supply at the faucet.

Fig. 3: Identifying Flushing Equipment

https://crs.mymitchell.com/PrintArticle.aspx?secIDs=&Id=0.3289617785768051 5/70
26/10/22, 8:52 Print Article
Fig. 4: Connecting Flushing Equipment

Initial Flush

1. Turn the flusher water supply valve (1) to the ON position and allow water to flow through the oil cooler and pipes for 10 seconds to
remove any remaining transmission fluid. See Fig. 5. If water does not flow through the oil cooler and pipes, the cause of the
blockage must be diagnosed and the plugged component must be repaired or replaced. Continue with the cooler flushing and flow
check procedure once the blockage is corrected.
2. Turn the flusher water supply valve (1) to the OFF position and clip the discharge hose (5) onto an appropriate container with a lid,
to avoid splashback. See Fig. 6. Turn the flusher water supply valve (1) to the ON position and depress the trigger (8) to mix cooler
flushing solution into the water flow. See Fig. 3. Use the clip provided on the handle to hold the trigger (8) down. The discharge will
foam vigorously when the solution is introduced into the water stream.

NOTE: Flushing for approximately 2 minutes in each cooler line direction will result in a total of about 8-10 gallons of waste
fluid. This mixture of water and flushing fluid is to be captured in an appropriate container for proper disposal.

3. Flush the oil cooler and pipes with water and solution for 2 minutes. During this flush, attach the shop air supply of 120 psi (825 kPa)
to the flushing system feed air valve (2) located on the flusher for 3-5 seconds at the end of every 15-20 second interval to create a
surging action.
4. Release the trigger (8) and turn the flusher water supply valve (1) to the OFF position.

https://crs.mymitchell.com/PrintArticle.aspx?secIDs=&Id=0.3289617785768051 6/70
26/10/22, 8:52 Print Article
Fig. 5: Flushing Oil Cooling System

https://crs.mymitchell.com/PrintArticle.aspx?secIDs=&Id=0.3289617785768051 7/70
26/10/22, 8:52 Print Article
Fig. 6: Capturing Fluid Discharge

Back Flush

1. Disconnect both hoses from the oil cooler pipes and then connect them to the opposite oil cooler pipe. This will allow the oil cooler
and pipes to be back flushed. Repeat steps and of the INITIAL FLUSH procedure. Release the trigger (8) of the flusher and allow
water only to rinse the oil cooler and pipes for one minute.
2. Turn the flusher water supply valve (1) to the OFF position and turn OFF the water supply at the faucet. Attach the shop air supply
to the flushing system feed air valve (2) on the flusher, and blow out the water from the oil cooler and pipes. Continue until no water
comes out of the discharge hose (5).

TRANSMISSION & OIL COOLER FLOW CHECK

1. Disconnect both hoses from the oil cooler pipes. Connect the oil cooler feed pipe (bottom connector) to the transmission and the
return pipe (top connector) (may require J 35944-600) to the discharge hose (5). Clip the discharge hose (5) onto the empty oil drain
container. See Fig. 6.
2. Confirm the transmission is filled with ATF. See CHECKING FLUID LEVELS. Start the engine with the transmission in PARK range
and run for 30 seconds. A minimum of 2 qts. (1.9L) must be discharged during this 30-second run time. If fluid flow is greater than 2
qts. (1.9L) in 30 seconds, go to next step. If fluid flow is less than 2 qts. (1.9L) in 30 seconds, perform the following diagnosis:
Disconnect the oil cooler feed line at the radiator. Connect the discharge hose (5) to the cooler feed line. Clip the discharge hose (5)
to the empty oil drain container. See Fig. 6. Start the engine with the transmission in PARK range and run for 30 seconds. A
minimum of 2 qts. (1.9L) must be discharged during this 30-second run time. Perform the following according to the flow rate:
Insufficient feed flow: Inspect the transmission.
Sufficient feed flow: Inspect the oil cooler return pipe and the oil cooler (and auxiliary cooler, if equipped).

3. Remove the discharge hose (5), reconnect the cooler feed and return pipes to the transmission and refill the unit to the proper fluid
level. Inspect the transmission oil cooler pipe connections at the radiator, the auxiliary cooler (if equipped) and the transmission for
leaks.

ON-VEHICLE REPAIRS

https://crs.mymitchell.com/PrintArticle.aspx?secIDs=&Id=0.3289617785768051 8/70
26/10/22, 8:52 Print Article
Various components may be serviced without transmission removal, depending on application. For servicing of these components, see
appropriate component under ADJUSTMENTS and/or REMOVAL & INSTALLATION . For additional information on testing electrical
components, see appropriate DIAGNOSIS article in AUTOMATIC TRANSMISSIONS.

ADJUSTMENTS
WARNING: Vehicle is equipped with Supplemental Inflatable Restraint (SIR) system. When servicing vehicle, use care to avoid
accidental air bag deployment. SIR system-related components are located in various locations throughout interior and
exterior of vehicle, depending on application. Do not use electrical test equipment on or near these circuits. If necessary,
deactivate SIR system before servicing components. See AIR BAG DEACTIVATION PROCEDURES article in GENERAL
INFORMATION.

PARK/NEUTRAL POSITION SWITCH

NOTE: The following procedure is for vehicles that have not had the switch removed or replaced. If the switch has been removed
or replaced, see PARK/NEUTRAL POSITION SWITCH under REMOVAL & INSTALLATION. Apply the parking brake. The
engine must start in the PARK or NEUTRAL positions only. Check the switch for proper operation. If adjustment is
required, proceed as follows:

1. With an assistant in driver's seat, raise and support vehicle. The transmission must be in the Park or Neutral
position only.
2. Loosen the switch retaining bolts and rotate the switch slightly, while the assistant attempts to start engine. After
engine starts, turn engine off. Tighten PNP switch bolts to specification. See TORQUE SPECIFICATIONS.
3. Ensure vehicle does not start in any range other than Park and Neutral. Replace the PNP switch if proper
operation can not be achieved.

SHIFT CABLE
1. Apply the park brake. Place the transmission range selector control lever (column or floor shift) into the Neutral position. Raise and
support the vehicle.
2. Remove the positive assurance pin (2) from the bracket. See Fig. 8.
3. Release the cable lock tab (1). See Fig. 7. Ensure the transmission range selector lever is in the Neutral position.
4. Rotate the range select lever fully clockwise then counter clockwise 2 detents. Pull the cable end completely forward and release it.
This allows the adjustment spring to position the cable to its most rearward position. Use care not to pull the cable past the ball stud.
This will result in a misadjusted cable. If the adjustment body is not free to move under spring load, a proper adjustment can still be
made.
5. Push the adjustment body against the rearward stop. Pull the cable end just far enough forward to install it to the ball stud. Install
the range selector cable end (2) to the range selector lever ball stud (1). See Fig. 9.
6. Depress the locking tab of cable (1) to set the adjustment. Install the positive assurance pin (2) into the bracket. Lower the vehicle.
Check the vehicle for proper operation.
7. The following conditions must be met:
When moving the gearshift lever from Park to Low, all detent positions will be attainable.
There will be an equal amount of free play between the gearshift lever and the gate in the drive and reverse detent. If there is
no free play, the adjustment is not acceptable.
With the key in the ON position and gearshift lever in Reverse, the key will not be removable, and the steering wheel will not
be locked.
With the key in the LOCKED position, and the gearshift lever in the Park position, the key will be removable, the steering
wheel will be locked, and the gearshift lever will not disengage from Park.

https://crs.mymitchell.com/PrintArticle.aspx?secIDs=&Id=0.3289617785768051 9/70
26/10/22, 8:52 Print Article
Fig. 7: Removing & Installing Cable Locking Tab

https://crs.mymitchell.com/PrintArticle.aspx?secIDs=&Id=0.3289617785768051 10/70
26/10/22, 8:52 Print Article
Fig. 8: Removing & Installing The Positive Assurance Pin

https://crs.mymitchell.com/PrintArticle.aspx?secIDs=&Id=0.3289617785768051 11/70
26/10/22, 8:52 Print Article
Fig. 9: Adjusting Shift Cable At Transmission

REMOVAL & INSTALLATION

WARNING: Vehicle is equipped with Supplemental Inflatable Restraint (SIR) system. When servicing vehicle, use care to avoid
accidental air bag deployment. SIR system-related components are located in various locations throughout interior and
exterior of vehicle, depending on application. Do not use electrical test equipment on or near these circuits. If necessary,
deactivate SIR system before servicing components. See AIR BAG DEACTIVATION PROCEDURES article in GENERAL
INFORMATION.

CAUTION: When battery is disconnected, vehicle computer and memory systems may lose memory data. Driveability problems may
exist until computer systems have completed a relearn cycle. Before disconnecting battery, see COMPUTER RELEARN
PROCEDURES article in GENERAL INFORMATION.

ACCUMULATOR ASSEMBLY

NOTE: Tools required: Pump and Valve Body Alignment Pin Set (J-25025-B), and Transmission Assembly Lubricant (J-36850).

Removal

1. Raise and support the vehicle. Remove the transmission oil pan and filter. See DRAINING & REFILLING under LUBRICATION.

NOTE: The 1-2 accumulator can be removed without removing the control valve assembly.

https://crs.mymitchell.com/PrintArticle.aspx?secIDs=&Id=0.3289617785768051 12/70
26/10/22, 8:52 Print Article
2. Remove the control valve body. See VALVE BODY & PRESSURE SWITCH. Remove the accumulator cover retaining bolts. See
Fig. 10.
3. Remove the 1-2 accumulator cover assembly. Disassemble the 1-2 accumulator. Blow compressed air into the 1-2 accumulator
cover, as shown, to remove the 1-2 accumulator piston. See Fig. 11. Remove the 1-2 accumulator inner and outer springs.
4. Inspect the 1-2 accumulator inner and outer springs for cracks. Remove the 1-2 accumulator piston seal (1) from the 1-2
accumulator piston. See Fig. 12. Inspect the 1-2 accumulator piston for the following defects: Porosity, cracks, scoring, nicks and
scratches.
5. Inspect the 1-2 accumulator cover for the following defects: Porosity, cracks, scoring, nicks and scratches. See Fig. 13. Remove the
spacer plate support retaining bolts. See Fig. 14.
6. Use care not to drop the following items that will be removed along with the spacer plate: No. 1 checkball, 3-4 accumulator spring,
and the 3-4 accumulator pin.
7. Remove the spacer plate support. See Fig. 15. Remove the spacer plate to valve body gasket, the spacer plate and the spacer
plate to transmission case gasket. Remove the 3-4 accumulator piston (2). See Fig. 16.
8. Inspect the 3-4 accumulator spring for cracks. Remove the 3-4 accumulator piston seal (1) from the 3-4 accumulator piston. See
Fig. 12. Inspect the 3-4 accumulator piston for the following defects: Porosity, cracks, scoring, nicks and scratches.

Installation

1. Install a new 3-4 accumulator piston seal (1) to the 3-4 accumulator piston. See Fig. 12.
2. Install the 3-4 accumulator pin (1) into the transmission case and retain the pin with assembly lubricant. See Fig. 17. Install the 3-4
accumulator piston (2) onto the pin (1) in the transmission case. Ensure the 3-4 accumulator piston legs face away from the
transmission case.
3. Install the alignment pin to the transmission case. Install the spacer plate to transmission case gasket and the spacer plate to valve
body gasket to the spacer plate. Use assembly lubricant in order to retain the gaskets to the spacer plate.
The case gasket is identified by a "C". Ensure to place the case gasket on the transmission case side of the spacer plate.
The valve body gasket is identified by a "V". Ensure to place the valve body gasket on the valve body side of the spacer
plate.

4. Ensure the solenoid screens (1-2) are in place on the spacer plate. Place the checkball (3) on the spacer plate in the location
shown. See Fig. 18. Place the 3-4 accumulator spring (4) on the spacer plate. Install the spacer plate and related components to the
transmission. Install the spacer plate support and the spacer plate support retaining bolts. Tighten the spacer plate support retaining
bolts to specification. See TORQUE SPECIFICATIONS.
5. After installing the spacer plate support (2), look through the hole in the spacer plate to ensure the checkball (1) has remained in the
proper location. See Fig. 19.
6. Install a new 1-2 accumulator piston seal (1) to the 1-2 accumulator piston. See Fig. 12. Install the 1-2 accumulator inner and outer
springs to the 1-2 accumulator cover. See Fig. 11. Install the 1-2 accumulator piston onto the pin in the 1-2 accumulator cover.
Ensure the piston legs face the accumulator cover.
7. Install the 1-2 accumulator cover and the accumulator cover retaining bolts. See Fig. 10. Tighten the accumulator cover retaining
bolts to specification. See TORQUE SPECIFICATIONS.
8. Remove the alignment pin from the transmission case. Install the control valve body. See VALVE BODY & PRESSURE SWITCH.
Install the transmission oil pan and filter. See DRAINING & REFILLING under LUBRICATION. Lower the vehicle. Fill transmission
with appropriate fluid to proper level. See LUBRICATION.

https://crs.mymitchell.com/PrintArticle.aspx?secIDs=&Id=0.3289617785768051 13/70
26/10/22, 8:52 Print Article
Fig. 10: Removing & Installing Accumulator Assembly Bolts

https://crs.mymitchell.com/PrintArticle.aspx?secIDs=&Id=0.3289617785768051 14/70
26/10/22, 8:52 Print Article
Fig. 11: Applying Compressed Air Into 1-2 Accumulator

https://crs.mymitchell.com/PrintArticle.aspx?secIDs=&Id=0.3289617785768051 15/70
26/10/22, 8:52 Print Article
Fig. 12: Removing & Installing Accumulator Seals

https://crs.mymitchell.com/PrintArticle.aspx?secIDs=&Id=0.3289617785768051 16/70
26/10/22, 8:52 Print Article
Fig. 13: Inspecting Accumulator Cover For Damage

https://crs.mymitchell.com/PrintArticle.aspx?secIDs=&Id=0.3289617785768051 17/70
26/10/22, 8:52 Print Article
Fig. 14: Removing & Installing Oil Pass Cover

https://crs.mymitchell.com/PrintArticle.aspx?secIDs=&Id=0.3289617785768051 18/70
26/10/22, 8:52 Print Article
Fig. 15: Removing & Installing Spacer Plates

https://crs.mymitchell.com/PrintArticle.aspx?secIDs=&Id=0.3289617785768051 19/70
26/10/22, 8:52 Print Article
Fig. 16: Removing & Installing 3-4 Accumulator Piston

https://crs.mymitchell.com/PrintArticle.aspx?secIDs=&Id=0.3289617785768051 20/70
26/10/22, 8:52 Print Article
Fig. 17: Installing 3-4 Accumulator Pin

https://crs.mymitchell.com/PrintArticle.aspx?secIDs=&Id=0.3289617785768051 21/70
26/10/22, 8:52 Print Article
Fig. 18: Preparing Spacer Plate & Gaskets For Installation

https://crs.mymitchell.com/PrintArticle.aspx?secIDs=&Id=0.3289617785768051 22/70
26/10/22, 8:52 Print Article
Fig. 19: Inspecting Spacer Plate For Proper Check Ball Location

CONTROL & SHIFT SOLENOIDS

NOTE: Do not remove the valve body for the following procedures. Removal of the 1-2 accumulator is necessary only if servicing
the pressure control solenoid.

Removal

1. Remove the transmission oil pan and filter. See DRAINING & REFILLING under LUBRICATION.
2. Remove the 1-2 accumulator if necessary. See ACCUMULATOR ASSEMBLY.
3. Disconnect the internal wiring harness electrical connectors from the following components:
Transmission fluid pressure switch (1). See Fig. 20.
1-2 shift control solenoid (2).
2-3 shift control solenoid (3).
Pressure control solenoid (4).
3-2 control solenoid (6).
TCC PWM solenoid (5).

4. Remove the pressure control solenoid retainer. Remove the pressure control solenoid. See Fig. 21.
5. Remove the 1-2 and 2-3 shift solenoid retainers. Remove the 1-2 and 2-3 shift solenoids. See Fig. 22.
6. Remove the 3-2 control solenoid retainer. Remove the 3-2 control solenoid. See Fig. 22.

Installation

https://crs.mymitchell.com/PrintArticle.aspx?secIDs=&Id=0.3289617785768051 23/70
26/10/22, 8:52 Print Article
1. Install the 3-2 control solenoid. Install the 3-2 control solenoid retainer. Install the 1-2 and 2-3 shift solenoids. See Fig. 22.
2. Install the 1-2 and 2-3 shift solenoid retainers. Install the pressure control solenoid. Ensure the electrical tabs are facing outboard.
See Fig. 22.
3. Install the pressure control solenoid retainer and retaining bolt. Tighten the pressure control solenoid retaining bolt to specification.
See TORQUE SPECIFICATIONS.
4. Connect the internal wiring harness electrical connectors to the following components:
Transmission fluid pressure switch (1). See Fig. 20.
1-2 shift control solenoid (2).
2-3 shift control solenoid (3).
Pressure control solenoid (4) TCC PWM solenoid (5).
3-2 control solenoid (6).

5. Install the 1-2 accumulator. See ACCUMULATOR ASSEMBLY.

6. Install the transmission oil pan and filter. See DRAINING & REFILLING under LUBRICATION.
7. Fill transmission with appropriate fluid to proper level. See LUBRICATION.

Fig. 20: View Of Control & Shift Solenoid Locations

https://crs.mymitchell.com/PrintArticle.aspx?secIDs=&Id=0.3289617785768051 24/70
26/10/22, 8:52 Print Article
Fig. 21: Disassembled View Of Pressure Control Solenoid

https://crs.mymitchell.com/PrintArticle.aspx?secIDs=&Id=0.3289617785768051 25/70
26/10/22, 8:52 Print Article
Fig. 22: Disassembled View Of Shift Solenoids

EXTENSION HOUSING ASSEMBLY

Removal

1. Raise and suitably support the vehicle. Support the transmission with a transmission jack. Place a drain pan under the vehicle.
2. Remove the propeller shaft. See appropriate DRIVE SHAFTS & UNIVERSAL JOINTS article in DRIVE AXLES. Remove the
transmission mount.
3. Remove the case extension bolts (1). Remove the case extension (2). See Fig. 23. Remove and discard the case extension O-ring
seal (3).

Installation

1. Install a new case extension O-ring seal (3). Install the case extension (2). Install the case extension bolts (1). See Fig. 23.
2. Tighten the case extension bolts (1) to specification. See TORQUE SPECIFICATIONS.
3. Install the transmission mount. Install the propeller shaft. See appropriate DRIVE SHAFTS & UNIVERSAL JOINTS article in DRIVE
AXLES.
4. Remove the drain pan and the transmission jack. Lower the vehicle. Fill transmission with appropriate fluid to proper level. See
LUBRICATION.

https://crs.mymitchell.com/PrintArticle.aspx?secIDs=&Id=0.3289617785768051 26/70
26/10/22, 8:52 Print Article
Fig. 23: Removing & Installing Extension Housing Assembly

EXTENSION HOUSING REAR OIL SEAL

NOTE: Tools required: Rear Extension Seal Installer (J-21426), and Transmission Assembly Lubricant (J-36850).

Removal

1. Raise and support the vehicle. Place a drain pan under the vehicle. Remove the propeller shaft. See appropriate DRIVE SHAFTS &
UNIVERSAL JOINTS article in DRIVE AXLES.
2. Remove the case extension housing rear oil seal. Use a flat bladed tool and carefully pry the seal from the housing. See Fig. 24.
3. Inspect the case extension housing for damage. Replace the extension housing if necessary. See EXTENSION HOUSING
ASSEMBLY.

Installation

1. Lubricate the inside diameter of the new seal with assembly lubricant. Use the seal installer with a soft faced mallet to install the
seal.
2. Install the seal to the extension housing. See Fig. 25. Install the propeller shaft. See appropriate DRIVE SHAFTS & UNIVERSAL
JOINTS article in DRIVE AXLES.
3. Remove the drain pan and lower the vehicle. Fill transmission with appropriate fluid to proper level. See LUBRICATION.

https://crs.mymitchell.com/PrintArticle.aspx?secIDs=&Id=0.3289617785768051 27/70
26/10/22, 8:52 Print Article
Fig. 24: Removing Rear Extension Housing Seal

Fig. 25: Installing Rear Extension Housing Rear Oil Seal

FILLER TUBE

Removal

1. On 2.2L models, remove the bolt securing the dipstick to the exhaust manifold. See Fig. 26. On all models, remove the transmission
oil level indicator.
2. Raise and support the vehicle. Support the transmission and transfer case (if equipped) with a suitable jack. Remove the
transmission cross member. See Fig. 27. On 4.3L models, remove the exhaust manifold pipe.
3. Remove the rear propeller shaft. See appropriate DRIVE SHAFTS & UNIVERSAL JOINTS article in DRIVE AXLES. On all models,
lower the transmission to gain access to the bolt securing the filler tube to the transmission torque converter housing, and remove
bolt. Remove the filler tube and seal from the vehicle. See Fig. 28.

https://crs.mymitchell.com/PrintArticle.aspx?secIDs=&Id=0.3289617785768051 28/70
26/10/22, 8:52 Print Article
Installation

1. Install a new seal into the transmission case. Install the filler tube into the seal. Install the bolt securing the filler tube to the
transmission torque converter housing. See Fig. 28. Tighten the bolt to specification. See TORQUE SPECIFICATIONS.
2. Raise the transmission. Install the transmission cross member and remove the jack. See Fig. 27.
3. On 4.3L models, install the rear propeller shaft. See appropriate DRIVE SHAFTS & UNIVERSAL JOINTS article in DRIVE AXLES.
Install the exhaust manifold pipe. On all models, lower the vehicle. On 2.2L models, install the bolt securing the dipstick to the
exhaust manifold. See Fig. 26. Tighten the bolt to specification. See TORQUE SPECIFICATIONS.
4. On all models, install the transmission oil level indicator. Fill transmission with appropriate fluid to proper level. See LUBRICATION.

Fig. 26: Removing & Installing Mounting Bolts

https://crs.mymitchell.com/PrintArticle.aspx?secIDs=&Id=0.3289617785768051 29/70
26/10/22, 8:52 Print Article
Fig. 27: Removing & Installing Crossmember Assembly

Fig. 28: Removing & Installing Filler Tube & Seal

https://crs.mymitchell.com/PrintArticle.aspx?secIDs=&Id=0.3289617785768051 30/70
26/10/22, 8:52 Print Article
OIL COOLER LINES

NOTE: Perform the following procedure when removing the retaining rings and cooler lines from the quick connect fittings located
on the radiator and/or the transmission.

Removal

1. Pull the plastic cap back from the quick connect fitting and down along the cooler line about 2" (50 mm). Using a bent-tip
screwdriver, pull on one of the open ends of the retaining ring in order to rotate the retaining ring around the quick connect fitting
until the retaining ring is out of position and can be completely removed. See Fig. 29.
2. Remove the retaining ring from the quick connect fitting. Discard the retaining ring. Pull the cooler line straight out from the quick
connect fitting. See Fig. 30. Remove the oil cooler lines from the radiator. On 4.3L and 4WD models, it may be necessary to gain
access to the lower cooler line (2) through the right side wheel well opening. See Fig. 31.
3. Raise and support the vehicle. On 2.2L models, remove the nut securing the cooling line to the engine. On 4.3L models, remove the
clip and stud securing the cooler line to the engine. See Fig. 32.
4. On all models, support the transmission with a transmission jack. Remove the exhaust crossover pipe and the transmission support
assembly. See Fig. 33.
5. Carefully lower the transmission to gain access to the cooler line fittings. Remove the cooler lines from the fittings on the
transmission. On 4WD models, it may be necessary to disconnect and temporarily relocate the transfer case vent hose to provide
access to the fittings. On all models, remove the cooler lines from the vehicle.

NOTE: Do not reuse any of the existing oil lines or oil line fittings if there is excessive corrosion. Do not reuse any of the existing
retaining rings that were removed from the existing quick connect fittings. All retaining rings being installed must be new.
Ensure the following procedures are performed when installing the new retaining rings onto the fittings.

Installation

1. Install the transmission oil cooler lines to the vehicle.

2. Install a NEW retaining ring (E-clip) into the quick connect fitting using the following procedure.
3. Hook one of the open ends of the retaining ring in one of the slots in the quick connect fitting. See Fig. 34. Rotate the retaining ring
around the fitting until the retaining ring is positioned with all three ears through the 3 slots on the fitting. See Fig. 35.
4. Do not install the new retaining ring onto the fitting by pushing the retaining ring. See Fig. 36. Ensure the 3 retaining ring ears are
seen from inside the fitting and that the retaining ring moves freely in the fitting slots. See Fig. 37. Install the NEW retaining ring (E-
clip) into the remaining quick connect fittings.

NOTE: Ensure the cooler line being installed has a plastic cap on each end that connects to a quick connect fitting. If no
plastic cap exists, or the plastic cap is damaged, obtain a new plastic cap and position on to the cooler line prior to
the cooler line installation.

5. Install the cooler lines to the vehicle. See Fig. 30. Install the cooler line into the quick connect fitting. Insert the cooler line end into
the quick connect fitting until a click is either heard or felt. See Fig. 38.
6. Do not use the plastic cap on the cooler line in order to install the cooler line into the fitting. See Fig. 39. Pull back sharply on the
cooler line in order to ensure the cooler line is fastened into the quick connect fitting. Position (snap) the plastic cap onto the fitting.
See Fig. 40.
7. Do not manually depress the retaining ring when installing the plastic cap onto the quick connect fitting. Ensure the plastic cap is
fully seated against the fitting. See Fig. 40.
8. Ensure no gap is present between the cap and the fitting. See Fig. 41. Ensure the Yellow identification band on the tube is hidden
within the quick connect fitting. A hidden Yellow identification band indicates proper joint seating. See Fig. 40. Install all remaining
cooling line ends to the remaining fittings.
9. Install the transfer case vent hose, if equipped. Raise the transmission into position. Install the exhaust crossover pipe and the
transmission support assembly. Remove the transmission jack.
10. On 4.3L models, install the stud and clip securing the cooler line to the engine. Tighten the stud to specification. See TORQUE
SPECIFICATIONS.
11. On 2.2L models, Install the nut securing the oil cooler lines to the engine. Tighten the nut to specification. See TORQUE
SPECIFICATIONS.
12. On all models, lower the vehicle. Fill transmission with appropriate fluid to proper level. See LUBRICATION.

https://crs.mymitchell.com/PrintArticle.aspx?secIDs=&Id=0.3289617785768051 31/70
26/10/22, 8:52 Print Article
Fig. 29: Removing Retaining Ring

https://crs.mymitchell.com/PrintArticle.aspx?secIDs=&Id=0.3289617785768051 32/70
26/10/22, 8:52 Print Article
Fig. 30: Removing & Installing Cooler Line From Quick Connect Fitting

Fig. 31: Removing & Installing Cooler Lines At Radiator

https://crs.mymitchell.com/PrintArticle.aspx?secIDs=&Id=0.3289617785768051 33/70
26/10/22, 8:52 Print Article
Fig. 32: View Of Cooler Lines

Fig. 33: Removing & Installing Transmission Cross Member

https://crs.mymitchell.com/PrintArticle.aspx?secIDs=&Id=0.3289617785768051 34/70
26/10/22, 8:52 Print Article
Fig. 34: Starting Retaining Ring Onto Quick Connect Fitting

Fig. 35: Installing Retaining Ring On Quick Connect Fitting

https://crs.mymitchell.com/PrintArticle.aspx?secIDs=&Id=0.3289617785768051 35/70
26/10/22, 8:52 Print Article
Fig. 36: View Of Incorrect Method Of Installing Retainer Ring

https://crs.mymitchell.com/PrintArticle.aspx?secIDs=&Id=0.3289617785768051 36/70
26/10/22, 8:52 Print Article
Fig. 37: View Of Correctly Installed Retainer Ring

Fig. 38: Installing Cooler Lines To Quick Connect Fitting

https://crs.mymitchell.com/PrintArticle.aspx?secIDs=&Id=0.3289617785768051 37/70
26/10/22, 8:52 Print Article
Fig. 39: Incorrect Installation Method Using Plastic Cap

Fig. 40: Installed View Of Quick Connect Fitting

https://crs.mymitchell.com/PrintArticle.aspx?secIDs=&Id=0.3289617785768051 38/70
26/10/22, 8:52 Print Article
Fig. 41: Checking For Improper Gap

https://crs.mymitchell.com/PrintArticle.aspx?secIDs=&Id=0.3289617785768051 39/70
26/10/22, 8:52 Print Article
Fig. 42: Checking For Identification Band

PARK/NEUTRAL POSITION SWITCH

NOTE: Tools required: Neutral Position Switch Adjustment Tool (J-41364-A).

Removal
Apply the parking brake. Shift the transmission into Neutral. Raise and support the vehicle. Remove the nut securing the transmission
control lever to the manual shaft. Remove the transmission control lever from the manual shaft. Disconnect the electrical connectors from
the switch. Remove the bolts securing the PNP switch to the transmission. Remove the PNP switch from the manual shaft. See Fig. 43. If
the PNP switch did not slide off the manual shaft, file the outer edge of the manual shaft to remove any burrs.

NOTE: If a new switch is being installed, the switch will come with a positive assurance bracket. The positive assurance bracket
aligns the new switch in it proper position for installation and the use of neutral position adjustment tool will not be
necessary.

Installation

1. Install the switch to the transmission manual shaft by aligning the switch hub flats with the manual shaft flats. See Fig. 43. Slide the
switch onto the transmission manual shaft until the switch mounting bracket contacts the mounting bosses on the transmission.
2. Install the switch to the transmission with 2 bolts finger tight. Position the alignment tool onto the PNP switch. See Fig. 44. Ensure
the 2 slots on the switch where the manual shaft is inserted are lined up with the lower 2 tabs on the tool.
3. Rotate the tool until the upper locator pin on the tool is lined up with the slot on the top of the switch. Tighten the bolts securing the
switch to specification. See TORQUE SPECIFICATIONS.
4. Remove the alignment tool from the switch. If installing a new switch, remove the positive assurance bracket at this time. Connect
the electrical connectors to the switch.
5. Install the transmission control lever to the manual shaft with the nut. Tighten the control lever nut to specification. See TORQUE
SPECIFICATIONS. Lower the vehicle.

https://crs.mymitchell.com/PrintArticle.aspx?secIDs=&Id=0.3289617785768051 40/70
26/10/22, 8:52 Print Article
6. Check the switch for proper operation. The engine must start in the Park and Neutral positions only. If proper operation of the switch
can not be obtained, replace the switch.

Fig. 43: Removing & Installing Park/Neutral Position Switch

https://crs.mymitchell.com/PrintArticle.aspx?secIDs=&Id=0.3289617785768051 41/70
26/10/22, 8:52 Print Article
Fig. 44: Adjusting Park/Neutral Position Switch

PRESSURE REGULATOR

Removal

1. Raise and support the vehicle. Remove the transmission oil pan and filter. See DRAINING & REFILLING under LUBRICATION.
2. Compress the reverse boost valve sleeve into the bore of the oil pump to release tension on the reverse boost valve retaining ring.
See Fig. 45.
3. Remove the reverse boost valve retaining ring, then slowly release tension on the reverse boost valve sleeve.
4. Remove the reverse boost valve sleeve (5) and the reverse boost valve (4). See Fig. 46.
5. Remove the pressure regulator isolator spring (3) and the pressure regulator valve spring (2). Remove the pressure regulator valve
(1). See Fig. 46.

Installation

1. Install the pressure regulator valve (1). Install the pressure regulator isolator spring (3) and the pressure regulator valve spring (2).
See Fig. 46.
2. Install the reverse boost valve (4) in the reverse boost valve sleeve (5). Install the reverse boost valve (4) and sleeve (5) in the oil
pump cover. See Fig. 46.
3. Compress the reverse boost valve sleeve into the bore of the oil pump to expose the retaining ring slot.
4. Install the reverse boost valve retaining ring, then slowly release tension on the reverse boost valve sleeve. See Fig. 45. Install the
transmission oil filter and pan. See DRAINING & REFILLING under LUBRICATION.
5. Lower the vehicle. Fill transmission with appropriate fluid to proper level. See LUBRICATION.

https://crs.mymitchell.com/PrintArticle.aspx?secIDs=&Id=0.3289617785768051 42/70
26/10/22, 8:52 Print Article
Fig. 45: Installed View Of Pressure Regulator

https://crs.mymitchell.com/PrintArticle.aspx?secIDs=&Id=0.3289617785768051 43/70
26/10/22, 8:52 Print Article
Fig. 46: Exploded View Of Pressure Regulator

SHIFT CABLE (COLUMN SHIFT)

Removal

1. Apply the parking brake. Position the gearshift lever in the Neutral position. Raise and support the vehicle. Disconnect the range
selector cable (2) from the range selector lever ball stud (1). See Fig. 9. Remove the positive assurance pin (2) from the bracket.
See Fig. 8.
2. Remove the retainer (1) from the range selector cable and transmission bracket. See Fig. 7. Depress the tangs and remove the
range selector cable from the bracket. Remove the transfer case shield, if equipped.
3. Push the range selector cable grommet up through the floor panel of the vehicle. Lower the vehicle. Remove the instrument panel
trim and knee bolster. See REMOVAL & INSTALLATION in appropriate SHIFT INTERLOCK SYSTEMS article in AUTOMATIC
TRANSMISSIONS.
4. Remove the door sill plate and the left hinge pillar trim panel. Place the drivers seat in the most rearward position. Pull back the
carpet and insulation around the driver's area. See Fig. 47.
5. Remove the cable end from the steering column ball stud. Remove the retainer securing the cable to the steering column bracket.
Depress the tangs and remove the cable from the steering column bracket.
6. Remove the cable from the retainer located next to the accelerator pedal. Remove the sound deadening material from the floor
panel that covers the cable. Pull the cable up through the opening in the floor panel and remove the cable from the vehicle. See Fig.
47.

Installation

1. Install the cable through the opening in the floor panel. Install the grommet to the floor panel. See Fig. 47. Install the sound
deadening material that covers the cable. Install the cable to the retainer located next to the accelerator pedal.

https://crs.mymitchell.com/PrintArticle.aspx?secIDs=&Id=0.3289617785768051 44/70
26/10/22, 8:52 Print Article
2. Install the cable to the steering column bracket. Install the retainer that secures the cable to the steering column bracket. Install the
cable end to the steering column ball stud.
3. Install the carpet and insulation to the drivers side floor area. Install the door sill plate and the left hinge pillar trim panel. Install the
knee bolster and instrument panel trim. See REMOVAL & INSTALLATION in appropriate SHIFT INTERLOCK SYSTEMS article in
AUTOMATIC TRANSMISSIONS.
4. Ensure the gearshift lever is in the Neutral position. Raise and support the vehicle. Install the range selector cable to the bracket.
Install the retainer (1) to the range selector cable and transmission bracket. See Fig. 7. Ensure the transmission range selector lever
is in the Neutral position.
5. Adjust cable. See SHIFT CABLE under ADJUSTMENTS. Following the adjustment procedure, install the range selector cable (2) to
the range selector cable lever ball stud (1). See Fig. 9.
6. Install the positive assurance pin to the bracket. See Fig. 8. Install the transfer case shield, if equipped.
7. Lower the vehicle and check for proper operation. Repeat the adjustment procedure if necessary. See SHIFT CABLE under
ADJUSTMENTS.

Fig. 47: Routing Shift Cable Through Floor Grommet

SHIFT CABLE (FLOOR SHIFT)

Removal

1. Apply parking brake and block wheels. Remove the left front mat and carpet as necessary. Remove the console. See REMOVAL &
INSTALLATION in appropriate SHIFT INTERLOCK SYSTEMS article in AUTOMATIC TRANSMISSIONS.
2. Ensure the transmission is in the mechanical Neutral position. Remove the retainer securing the shift cable to the shift controller.
See Fig. 48.
3. Remove the tape and grommet on the shift cable from the floor panel. See Fig. 49.

https://crs.mymitchell.com/PrintArticle.aspx?secIDs=&Id=0.3289617785768051 45/70
26/10/22, 8:52 Print Article
4. Raise and support the vehicle. Remove the retainer from the shift cable and transmission bracket. See Fig. 50. Remove the shift
cable end from the gearshift lever stud ball. Remove the cable from the vehicle.

Installation

1. Ensure the transmission is in the mechanical Neutral position. Adjust the shift cable. See SHIFT CABLE under ADJUSTMENTS.
Following the shift cable adjustment procedure, install the shift cable end of the shift cable to the gearshift lever stud ball.
2. Install the retainer to the shift cable and transmission bracket. Feed the shift cable through the floor panel. See Fig. 49. Lower the
vehicle.
3. Install the tape and grommet on the shift cable to the floor panel. Install the retainer securing the shift cable to the shift controller.
See Fig. 48.
4. Install the console. See REMOVAL & INSTALLATION in appropriate SHIFT INTERLOCK SYSTEMS article in AUTOMATIC
TRANSMISSIONS. Install the front mat and carpet.

Fig. 48: Removing & Installing Cable At Floor Shift Assembly

https://crs.mymitchell.com/PrintArticle.aspx?secIDs=&Id=0.3289617785768051 46/70
26/10/22, 8:52 Print Article
Fig. 49: Shift Cable Routing Under Carpet

Fig. 50: Identifying Shift Cable Location & Routing

https://crs.mymitchell.com/PrintArticle.aspx?secIDs=&Id=0.3289617785768051 47/70
26/10/22, 8:52 Print Article
TCC PWM SOLENOID, TCC SOLENOID & WIRING HARNESS

NOTE: Tools required: Seal Protector Retainer Installer (J-28458).

Removal

1. Raise and support the vehicle. Remove the transmission oil pan and the filter. See DRAINING & REFILLING under LUBRICATION.
2. Disconnect the transmission harness 20-way connector from the transmission internal harness pass-through connector. See Fig. 51.
Depress both tabs on the connector and pull straight up, do not pry the connector.
3. Remove the 1-2 accumulator assembly. See ACCUMULATOR ASSEMBLY.
4. Disconnect the internal wiring harness electrical connectors from the following components: Transmission fluid pressure switch (1),
1-2 shift control solenoid (2), 2-3 shift control solenoid (3), pressure control solenoid (4), TCC PWM solenoid (5), and the 3-2 control
solenoid (6). See Fig. 20.
5. Remove the TCC PWM solenoid retainer. Remove the TCC PWM solenoid to access one of the TCC solenoid retaining bolts. See
Fig. 52.
6. Remove the pressure control solenoid retainer. Remove the pressure control solenoid. See Fig. 21. Remove the TCC solenoid
retaining bolts and the valve body bolts which retain the internal wiring harness. See Fig. 53.
7. Using seal protector retainer installer, release the pass-through electrical connector from the transmission case. See Fig. 54. Use
the small end of the seal protector retainer installer over the top of the connector. Twist to release the 4 tabs retaining the connector.
Pull the harness connector down through the transmission case.
8. Remove the TCC solenoid (with O-ring seal) and wiring harness assembly from the transmission case.
9. Inspect the TCC solenoid and wiring harness assembly for the following defects: Damage, cracked, connectors, exposed wires,
loose pins. See Fig. 55.

Installation

1. Install the wiring harness and TCC solenoid assembly with a new O-ring seal to the transmission. Install the pass-through electrical
connector to the transmission case. See Fig. 54.
2. Install the valve body bolts which retain the internal wiring harness and install the TCC solenoid retaining bolts. See Fig. 53. Tighten
the control valve body retaining bolts to specification. See TORQUE SPECIFICATIONS.
3. Tighten the TCC solenoid retaining bolts to specification. See TORQUE SPECIFICATIONS.
4. Install the pressure control solenoid. See Fig. 21. Ensure the electrical tabs are facing outboard. Install the pressure control solenoid
retainer and retaining bolt. Tighten the pressure control solenoid retaining bolt to specification. See TORQUE SPECIFICATIONS.
5. Install the TCC PWM solenoid to the control valve body. See Fig. 52. Install the TCC PWM solenoid retainer.
6. Connect the internal wiring harness electrical connectors to the following components: Transmission fluid pressure switch (1), 1-2
shift control solenoid (2), 2-3 shift control solenoid (3), pressure control solenoid (4), TCC PWM solenoid (5), and the 3-2 control
solenoid (6). Install the 1-2 accumulator. See Fig. 20.
7. Connect the transmission harness 20-way connector to the transmission pass-through connector. Align the arrows on each half of
the connector and insert straight down. See Fig. 51.
8. Install the transmission oil pan and filter. See DRAINING & REFILLING under LUBRICATION. Lower the vehicle. Fill transmission
with appropriate fluid to proper level. See LUBRICATION.

https://crs.mymitchell.com/PrintArticle.aspx?secIDs=&Id=0.3289617785768051 48/70
26/10/22, 8:52 Print Article
Fig. 51: Disconnecting & Connecting Transmission Harness Connector

https://crs.mymitchell.com/PrintArticle.aspx?secIDs=&Id=0.3289617785768051 49/70
26/10/22, 8:52 Print Article
Fig. 52: Removing & Installing TCC PWM Solenoid

https://crs.mymitchell.com/PrintArticle.aspx?secIDs=&Id=0.3289617785768051 50/70
26/10/22, 8:52 Print Article
Fig. 53: Removing & Installing Valve Body/TCC Solenoid Bolts

https://crs.mymitchell.com/PrintArticle.aspx?secIDs=&Id=0.3289617785768051 51/70
26/10/22, 8:52 Print Article
Fig. 54: Removing & Installing Internal Wiring Harness

https://crs.mymitchell.com/PrintArticle.aspx?secIDs=&Id=0.3289617785768051 52/70
26/10/22, 8:52 Print Article
Fig. 55: Inspecting Internal Wiring Harness

VALVE BODY & PRESSURE SWITCH

Removal

1. Ensure removal of the valve body is necessary before proceeding. The following components can be serviced without removing the
valve body from the transmission:
Torque Converter Clutch Solenoid (1)
Pressure Control Solenoid (2)
Internal Wiring Harness (3)
2-3 Shift Solenoid (4)
1-2 Shift Solenoid (5)
Transmission Fluid Pressure Manual Valve Position Switch (6)
3-2 Shift Solenoid (7)
Torque Converter Clutch Pulse Width Modulation (TCC PWM) Solenoid (8)

See Fig. 56.

2. Remove the fluid level indicator. Raise and support the vehicle. Remove the oil pan, gasket and filter. See DRAINING & REFILLING
under LUBRICATION.
3. Disconnect the internal wiring harness electrical connectors from the following components: transmission fluid pressure manual
valve position switch (1), 1-2 shift solenoid (2), 2-3 shift solenoid (3), pressure control solenoid (4), TCC PWM solenoid (5), and the
3-2 shift solenoid (6). Remove the bracket bolt (2).
4. Remove the fluid indicator stop. See Fig. 57. Remove the fluid indicator bracket (1). Remove the TCC PWM solenoid retainer (2)
with a small screwdriver. Rotate the solenoid (1) in the bore, if necessary, until the flat part of the retainer (2) is visible.
5. Remove the TCC PWM solenoid (1) to access the TCC solenoid retaining bolts. See Fig. 52. Remove the TCC solenoid retaining
bolts. See Fig. 58. Remove the TCC solenoid (with O-ring seal) and wiring harness from the control valve body.
6. Reposition the harness to the side of the transmission case. See Fig. 54. Remove the control valve body bolts which retain the
transmission fluid pressure switch to the control valve body. See Fig. 59. Remove the transmission fluid pressure switch. Inspect the
transmission fluid pressure switch for damage or debris. See Fig. 60.
7. Remove the manual detent spring retaining bolt. Remove the manual detent spring. See Fig. 61. Inspect the manual detent spring
for cracks or damage. Keep the control valve body level when lowering it from the vehicle. This will prevent the loss of checkballs
located in the control valve body passages.

https://crs.mymitchell.com/PrintArticle.aspx?secIDs=&Id=0.3289617785768051 53/70
26/10/22, 8:52 Print Article
8. Remove the remaining control valve body bolts. Carefully begin to lower the control valve body down from the transmission case
while simultaneously disconnecting the manual valve link. See Fig. 62.
9. If disassembly of the control valve body is necessary, see appropriate OVERHAUL article in AUTOMATIC TRANSMISSIONS.

Installation

1. Install the checkballs (1-7) in the valve body. See Fig. 63. Install the control valve body to the transmission case while
simultaneously connecting the manual valve link to the manual valve. See Fig. 62.

NOTE: When installing bolts throughout this procedure, ensure to use the correct bolt size and length in the correct
location as specified.

2. Verify the manual valve link (3) is installed properly to the inside detent lever (1) and the manual valve (2). See Fig. 64. Install one
bolt (M6 X 1.0 X 47.5) hand-tight in the center (1) of the valve body to hold it in place. See Fig. 65. DO NOT install the transmission
fluid indicator stop bracket and bolt at this time.
3. Install but DO NOT tighten the control valve body bolts which retain only the valve body directly. See Fig. 66.
4. Each numbered bolt location corresponds to a specific bolt size and length, as indicated by the following:
M6 X 1.0 X 65.0 (1).
M6 X 1.0 X 54.4 (2).
M6 X 1.0 X 47.5 (3).
M6 X 1.0 X 35.0 (4).
M8 X 1.0 X 20.0 (5).
M6 X 1.0 X 12.0 (6).
M6 X 1.0 X 18.0 (7).

5. Install the manual detent spring. Install but DO NOT tighten the manual detent spring retaining bolt. See Fig. 61. Install the
transmission fluid pressure switch. See Fig. 59. Install but DO NOT tighten the control valve body bolts which retain the
transmission fluid pressure switch to the control valve body. See Fig. 59.
6. Tighten the control valve body bolts in a spiral pattern starting from the center, as indicated by the arrows. Tighten the control valve
body bolts (in sequence) to 97 INCH lbs. (11 N.m). See Fig. 66.
7. Ensure the manual detent spring is aligned properly with the detent lever. Tighten the manual detent spring bolt to specification. See
TORQUE SPECIFICATIONS.
8. Install the TCC solenoid with a new O-ring seal to the valve body. Install the TCC solenoid bolts. Tighten the TCC solenoid retaining
bolts to specification. See TORQUE SPECIFICATIONS.
9. Install the internal wiring harness to the valve body. The internal wiring harness has a tab (1) on the edge of the conduit. Place the
tab between the valve body and the pressure switch in the location shown (2). See Fig. 54. Press the harness into position on the
valve body bolt bosses (1-3).
10. Install the TCC PWM solenoid (1) to the control valve body. Install the TCC PWM solenoid retainer (2). See Fig. 52.
11. Install the transmission fluid indicator stop bracket (1) and bolt (2). See Fig. 57. Tighten the transmission fluid indicator stop bracket
bolt to specification. See TORQUE SPECIFICATIONS.
12. Connect the internal wiring harness electrical connectors to the following components: transmission fluid pressure manual valve
position switch (1), 1-2 shift solenoid (2), 2-3 shift solenoid (3), pressure control solenoid (4), TCC PWM solenoid (5), and the 3-2
shift solenoid (6). See Fig. 20.
13. Install the transmission oil pan and filter. See DRAINING & REFILLING under LUBRICATION. Lower the vehicle. Fill transmission
with appropriate fluid to proper level. See LUBRICATION.

https://crs.mymitchell.com/PrintArticle.aspx?secIDs=&Id=0.3289617785768051 54/70
26/10/22, 8:52 Print Article
Fig. 56: Internal View Of Serviceable Components

https://crs.mymitchell.com/PrintArticle.aspx?secIDs=&Id=0.3289617785768051 55/70
26/10/22, 8:52 Print Article
Fig. 57: Removing & Installing Fluid Indicator Stop

https://crs.mymitchell.com/PrintArticle.aspx?secIDs=&Id=0.3289617785768051 56/70
26/10/22, 8:52 Print Article
Fig. 58: Removing & Installing TCC Retainer Bolts

https://crs.mymitchell.com/PrintArticle.aspx?secIDs=&Id=0.3289617785768051 57/70
26/10/22, 8:52 Print Article
Fig. 59: Removing & Installing Fluid Pressure Switch Bolts

Fig. 60: Inspecting Fluid Pressure Switch For Damage

https://crs.mymitchell.com/PrintArticle.aspx?secIDs=&Id=0.3289617785768051 58/70
26/10/22, 8:52 Print Article
Fig. 61: Removing & Installing Manual Detent Lever

https://crs.mymitchell.com/PrintArticle.aspx?secIDs=&Id=0.3289617785768051 59/70
26/10/22, 8:52 Print Article
Fig. 62: Lowering & Raising Valve Body

https://crs.mymitchell.com/PrintArticle.aspx?secIDs=&Id=0.3289617785768051 60/70
26/10/22, 8:52 Print Article
Fig. 63: Installing Check Balls In Valve Body

https://crs.mymitchell.com/PrintArticle.aspx?secIDs=&Id=0.3289617785768051 61/70
26/10/22, 8:52 Print Article
Fig. 64: Installing Manual Valve To Detent Lever

https://crs.mymitchell.com/PrintArticle.aspx?secIDs=&Id=0.3289617785768051 62/70
26/10/22, 8:52 Print Article
Fig. 65: Location Of 1st Bolt To Hold Valve Body In Place

https://crs.mymitchell.com/PrintArticle.aspx?secIDs=&Id=0.3289617785768051 63/70
26/10/22, 8:52 Print Article
Fig. 66: Valve Body Bolt Tightening Sequence

VEHICLE SPEED SENSOR

Removal
Raise and support the vehicle. Remove the harness connector. Remove the bolt. Using a twisting and pulling motion, remove the vehicle
speed sensor (1) from the case. See Fig. 67. Remove and discard the O-ring seal (3).

Installation
Install the speed sensor and NEW O-ring seal. See Fig. 67. Coat the O-ring seal (3) with clean transmission fluid. Install and tighten the
bolt to specification. See TORQUE SPECIFICATIONS. Install the harness connector. Lower the vehicle. Fill transmission with appropriate
fluid to proper level. See LUBRICATION.

https://crs.mymitchell.com/PrintArticle.aspx?secIDs=&Id=0.3289617785768051 64/70
26/10/22, 8:52 Print Article
Fig. 67: Removing & Installing VSS

2-4 SERVO

NOTE: Tools required: Servo Cover Depressor (J-29714-A).

Removal

1. Raise and support the vehicle. Remove the oil pan bolt below and to the left of the 2-4 servo cover. Install the servo cover depressor
to the oil pan rail. Tighten the bolt on the servo cover depressor to compress the servo cover. See Fig. 68.
2. Remove the servo cover retaining ring. See Fig. 69. Loosen the bolt on the servo cover depressor to release tension on the servo
cover. Remove the servo cover and O-ring seal. If the cover is hung up on the seal, use a pick (2) to pull and stretch the seal (1) out
of the groove. Cut and remove the O-ring seal before removing the cover. See Fig. 70.
3. Remove the 2-4 servo assembly from the transmission.
4. Inspect the 4th apply piston, the 2-4 servo converter, 2nd apply piston, and the piston inner housing for cracks, scoring, burrs and
nicks. See Fig. 71.

Installation

1. Install the new seals on the pistons and the servo cover. Lubricate the seals with clean transmission fluid. Install the 2-4 servo
assembly into the 2-4 servo bore. Install the servo cover and O-ring seal. Install the servo cover depressor.
2. Tighten the bolt on the servo cover depressor to compress the servo cover. See Fig. 68. Install the servo cover retaining ring.
Remove the servo cover depressor from the oil pan flange.
3. Install the oil pan bolt and tighten to specification. See TORQUE SPECIFICATIONS. Lower the vehicle. Fill transmission with
appropriate fluid to proper level. See LUBRICATION.

https://crs.mymitchell.com/PrintArticle.aspx?secIDs=&Id=0.3289617785768051 65/70
26/10/22, 8:52 Print Article
Fig. 68: Installing Servo Cover Depressor

https://crs.mymitchell.com/PrintArticle.aspx?secIDs=&Id=0.3289617785768051 66/70
26/10/22, 8:52 Print Article
Fig. 69: Removing Servo Cover Retaining Ring

https://crs.mymitchell.com/PrintArticle.aspx?secIDs=&Id=0.3289617785768051 67/70
26/10/22, 8:52 Print Article
Fig. 70: Removing Servo O-Ring

https://crs.mymitchell.com/PrintArticle.aspx?secIDs=&Id=0.3289617785768051 68/70
26/10/22, 8:52 Print Article
Fig. 71: Inspecting Servo Components For Damage

TORQUE SPECIFICATIONS

TORQUE SPECIFICATIONS

Application Ft. Lbs. (N.m)

Filler Tube Bolt 35 (47)

Oil Pan Drain Plug 13 (18)

PNP Switch Bolt 18 (24)

Transmission Control Lever Nut 18 (24)

INCH Lbs. (N.m)

Accumulator-To-Case Bolt 97 (11)

Manual Detent Spring Bolt 97 (11)

Oil Cooler Line Bolt 97 (11)

Oil Pan Bolt 97 (11)

Oil Pass Cover Bolt 97 (11)

https://crs.mymitchell.com/PrintArticle.aspx?secIDs=&Id=0.3289617785768051 69/70
26/10/22, 8:52 Print Article

Application Ft. Lbs. (N.m)

Pressure Control Solenoid Bolt 97 (11)

TCC Solenoid Bolt 97 (11)

Transmission Fluid Indicator Stop Bolt 97 (11)

Valve Body-To-Case Bolt 1 97 (11)

VSS Bolt 97 (11)

1
Tighten valve body bolts in a spiral pattern starting in center of valve body.

Created/Modified Date: 2/2/2012 9:54:21 PM

https://crs.mymitchell.com/PrintArticle.aspx?secIDs=&Id=0.3289617785768051 70/70