2007 Chevrolet TrailBlazer
Wiring Diagrams / OEM CONNECTOR END VIEWS
Engine Control Module Connector End Views (5.3L)
Engine Control Module (ECM) Connector End View C1
Fig. 53: Engine Control Module (ECM) C1 Connector End View
Engine Control Module (ECM) C1 Connector Parts Information
Connector Part Information
OEM: 13510837 (Early Production)/13574282 (Late Production)
Service: 88988373
Description: 56-Way F Receptacle 0.64 Series Sealed (BU)/33-Way F Sealed (BU)
Terminal Part Information
Pins: 1-2, 4, 9, 12-13, 16, 18, 20-22, 24-25, 30-37, 39-40, 44, 46-49, 53, 55-56
Terminal/Tray: 33467-0003/23
Core/Insulation Crimp: H/H
Release Tool/Test Probe: J-38125-213/J-35616-64B (L-BU)
Pins: 7, 19
Terminal/Tray: 33467-0005/23
Core/Insulation Crimp: J/J
Release Tool/Test Probe: J-38125-213/J-35616-64B (L-BU)
Engine Control Module (ECM) C1 Connector Terminal Identification
Pin Wire Color Circuit No. Function
1 PU 806 Crank Voltage
Pin Wire Color Circuit No. Function
2 PU 420 TCC Brake Switch/Cruise Control Release Signal
3 - - Not Used (Early Production)
- - Not Available (Late Production)
4 GY/BK 1694 4WD Low Signal (NP8)
5-6 - - Not Used (Early Production)
- - Not Available (Late Production)
7 L-BU 1320 CHMSL Supply Voltage (K34)
8 - - Not Used (Early Production)
- - Not Available (Late Production)
9 BK 2759 Low Reference
10-11 - - Not Used (Early Production)
- - Not Available (Late Production)
12 BN/WH 419 MIL Control
13 D-GN/WH 465 Fuel Pump Relay Control
14-15 - - Not Used (Early Production)
- - Not Available (Late Production)
16 D-GN 1049 Class 2 Serial Data
17 - - Not Used (Early Production)
- - Not Available (Late Production)
18 PK 1020 Ignition 0 Voltage
19 PK 439 Ignition 1 Voltage
20 OG 240 Battery Positive Voltage
21 GY/BK 87 Cruise Control Resume/Accel Switch Signal (K34)
22 D-BU 84 Cruise Control Set/Coast Switch Signal (K34)
23 - - Not Used (Early Production)
- - Not Available (Late Production)
24 YE/BK 1827 Vehicle Speed Signal
25 WH 121 Engine Speed Signal
26-29 - - Not Used (Early Production)
- - Not Available (Late Production)
30 GY 397 Cruise Control On Switch Signal (K34)
31 BK 452 Low Reference
32 GY 416 5-Volt Reference
33 WH/BK 1164 5-Volt Reference
Pin Wire Color Circuit No. Function
34 GY 2709 5-Volt Reference
35 TN 1274 5-Volt Reference
36 BN 1271 Low Reference
37 PU 1272 Low Reference
38 - - Not Used (Early Production)
- - Not Available (Late Production)
39 D-GN/WH 817 Vehicle Speed Signal
40 YE 5991 Powertrain Relay Coil Control
41-43 - - Not Used (Early Production)
- - Not Available (Late Production)
44 PU 1589 Fuel Level Sensor Signal
45 - - Not Used (Early Production)
- - Not Available (Late Production)
46 D-BU 1809 Brake Booster Vacuum Sensor
47 D-BU 1161 APP Sensor 1 Signal
48 D-GN 890 Fuel Tank Pressure Sensor
49 L-BU 1162 App Sensor 2 Signal
50-52 - - Not Used (Early Production)
- - Not Available (Late Production)
53 D-GN/WH 459 A/C Compressor Clutch Relay Control
54 - - Not Used (Early Production)
- - Not Available (Late Production)
55 WH 1310 EVAP Canister Vent Solenoid Control
56 YE/BK 625 Starter Enable Relay Control
Engine Control Module (ECM) Connector End View C2
Fig. 54: Engine Control Module (ECM) C2 Connector End View
Engine Control Module (ECM) C2 Connector Parts Information
Connector Part Information
OEM: 15499466 (Early Production)/13574286 (Late Production)
Service: 88988931
Description: 73-Way F Receptacle 0.64 2.8 Series Sealed (BK) (Early Production)/48-Way F Recptacle 0.64 Series Sealed (BK) (Late
Production)
Terminal Part Information-
Pins: 1-5, 11-13, 16-19, 32-35, 42, 48-49, 52-55, 62, 67-72
Terminal/Tray: 33467-0005/23
Core/Insulation Crimp: J/J
Release Tool/Test Probe: J-38125-213/J-35616-64B (L-BU)
Pins: 6-9, 23-24, 27, 29, 39-40, 43-44, 59-60, 63-64, 66
Terminal/Tray: 33467-0003/23
Core/Insulation Crimp: H/H
Release Tool/Test Probe: J-38125-213/J-35616-64B (L-BU)
Pins: 73
Terminal/Tray: See Terminal Repait Kit
Core/Insulation Crimp: See Terminal Repait Kit
Release Tool/Test Probe: See Terminal Repait Kit
Engine Control Module (ECM) C2 Connecter Terminal Identification
Pin Wire Color Circuit No. Function
1 PU 2121 IC 1 Control
2 TN 1664 HO2S Low Signal - Bank 1 Sensor 1
3 PU/WH 1665 HO2S High Signal - Bank 1 Sensor 1
4 PU/WH 1668 HO2S High Signal - Bank 1 Sensor 2
Pin Wire Color Circuit No. Function
5 TN/WH 1669 HO2S Low Signal - Bank 1 Sensor 2
6 L-BU 1876 Knock Sensor 2 Signal
7 GY 2303 Knock Sensor Signal
8 D-BU 496 Knock Sensor 1 Signal
9 GY 1716 Knock Sensor Signal
10 - - Not Used (Early Production)
- - Not Available (Late Production)
11 YE 581 TAC Motor Control 1
12 BN 582 TAC Motor Control 2
13 PK 839 Ignition 1 Voltage
14-15 - - Not Used (Early Production)
- - Not Available (Late Production)
16 PK/BK 1746 Fuel Injector 3 Control
17 PU/WH 2128 IC 8 Control
18 D-GN/WH 2124 IC 4 Control
19 BN/WH 2130 Low Reference
20-22 - - Not Used (Early Production)
- - Not Available (Late Production)
23 BN/WH 633 Low Reference (Early Production)
PK/BK 632 Low Reference (Late Production)
24 BK 2755 Low Reference
25-26 - - Not Used (Early Production)
- - Not Available (Late Production)
27 D-BU/WH 1869 Low Reference (Early Production)
YE/BK 1868 Low Reference (Late Production)
28 - - Not Used (Early Production)
- - Not Available (Late Production)
29 BK/WH 1704 Low Reference
30-31 - - Not Used (Early Production)
- - Not Available (Late Production)
32 L-GN/BK 1745 Fuel Injector 2 Control
33 RD 2127 IC 7 Control
34 D-GN 2125 IC 5 Control
35 BN 2129 Low Reference
Pin Wire Color Circuit No. Function
36-38 - - Not Used (Early Production)
- - Not Available (Late Production)
39 RD 631 12-Volt Reference
40 GY 2705 5-Volt Reference
41 - - Not Used (Early Production)
- - Not Available (Late Production)
42 BK 2760 Low Reference
43 L-GN 1867 12-Volt Reference
44 L-BU/BK 1688 5-Volt Reference
45-47 - - Not Used (Early Production)
- - Not Available (Late Production)
48 D-BU/WH 878 Fuel Injector 8 Control
49 BK/WH 845 Fuel Injector 5 Control
50-51 - - Not Used (Early Production)
- - Not Available (Late Production)
52 YE/BK 846 Fuel Injector 6 Control
53 RD/WH 2122 IC 2 Control
54 L-BU/WH 2126 IC 6 Control
55 L-BU 2123 IC 3 Control
56-58 - - Not Used (Early Production)
- - Not Available (Late Production)
59 PK/BK 632 CMP Sensor Signal (Early Production)
BN/WH 633 CMP Sensor Signal (Late Production)
60 TN/WH 332 Oil Pressure Sensor Signal
61 - - Not Used (Early Production)
- - Not Available (Late Production)
62 TN 472 IAT Sensor Signal
63 YE/BK 1868 CKP Sensor Signal (Early Production)
D-BU/WH 1869 CKP Sensor Signal (Late Production)
64 D-GN 485 TP Sensor 1 Signal
65 - - Not Used (Early Production)
- - Not Available (Late Production)
66 PU 486 TP Sensor 2 Signal
67 YE 492 MAF Sensor Signal
Pin Wire Color Circuit No. Function
68 BK/WH 3113 HO2S Heater Low Control - Bank 1 Sensor 1
69 BN 2391 HO2S Heater Low Control - Bank 1 Sensor 2
70 L-BU/BK 844 Fuel Injector 4 Control
71 RD/BK 877 Fuel Injector 7 Control
72 BK 1744 Fuel Injector 1 Control
73 BK 450 Ground
Engine Control Module (ECM) Connector End View C3
Fig. 55: Engine Control Module (ECM) C3 Connector End View
Engine Control Module (ECM) C3 Connector Parts Information
Connector Part Information
OEM: 15497996 (Early Production)/13574284 (Late Production)
Service: 88988372
Description: 73-Way F Receptacle 0.64 2.8 Series Sealed (GY)/32-Way F Sealed (GY)
Terminal Part Information
Pins: 3-6, 10-11, 15, 48, 50, 68-69
Terminal/Tray: 33467-0005/23
Core/Insulation Crimp: J/J
Release Tool/Test Probe: J-38125-213/J-35616-64B (L-BU)
Pins: 7, 12, 17, 21, 23, 28-29, 33, 35, 37, 39, 44, 47, 49, 53, 55, 57, 59, 64, 66
Terminal/Tray: 33467-0003/23
Core/Insulation Crimp: H/H
Release Tool/Test Probe: J-38125-213/J-35616-64B (L-BU)
Engine Control Module (ECM) C3 Connecter Terminal Identification
Pin Wire Color Circuit No. Function
1-2 - - Not Used (Early Production)
- - Not Available (Late Production)
3 TN 1667 HO2S Low Signal - Bank 2 Sensor 1
4 PU 1666 HO2S High Signal - Bank 2 Sensor 1
5 PU 1670 HO2S High Signal - Bank 2 Sensor 2
6 TN 1671 HO2S Low Signal - Bank 2 Sensor 2
7 PU 5428 Generator Regulator Control
8-9 - - Not Used (Early Production)
- - Not Available (Late Production)
10 GY 5493 Cylinder Shutoff Solenoid Control (3)
11 D-BU 5491 Cylinder Shutoff Solenoid Control (1)
12 TN/BK 464 Delivered Torque Signal
13-14 - - Not Used (Early Production)
- - Not Available (Late Production)
15 L-GN 3212 HO2S Heater Low Control - Bank 2 Sensor 1
16 - - Not Used (Early Production)
- - Not Available (Late Production)
17 OG/BK 463 Requested Torque Signal
18-20 - - Not Used (Early Production)
- - Not Available (Late Production)
21 BK 2751 Low Reference
22 - - Not Used (Early Production)
- - Not Available (Late Production)
23 OG/BK 469 Low Reference
24-27 - - Not Used (Early Production)
- - Not Available (Late Production)
28 GY 2365 Low Reference
29 GY 23 Generator Field Duty Cycle Signal
30-32 - - Not Used (Early Production)
- - Not Available (Late Production)
33 TN 2501 High Speed GMLAN Serial Data Bus -
34 - - Not Used (Early Production)
- - Not Available (Late Production)
35 BK 2761 Low Reference
Pin Wire Color Circuit No. Function
36 - - Not Used (Early Production)
- - Not Available (Late Production)
37 GY 2700 5-Volt Reference
38 - - Not Used (Early Production)
- - Not Available (Late Production)
39 GY 2704 5-Volt Reference
40-43 - - Not Used (Early Production)
- - Not Available (Late Production)
44 GY 597 5-Volt Reference
45-46 - - Not Used (Early Production)
- - Not Available (Late Production)
47 OG/BK 1786 PNP Switch Signal
48 D-GN/WH 428 EVAP Canister Purge Solenoid Control
49 WH/BK 2366 Cooling Fan Clutch Control
50 RD/WH 3223 HO2S Heater Low Control - Bank 2 Sensor 2
51-52 - - Not Used (Early Production)
- - Not Available (Late Production)
53 TN/WH 2500 High Speed GMLAN Serial Data Bus +
54 - - Not Used (Early Production)
- - Not Available (Late Production)
55 YE 410 ECT Sensor Signal
56 - - Not Used (Early Production)
- - Not Available (Late Production)
57 RD/BK 380 A/C Refrigerant Pressure Sensor
58 - - Not Used (Early Production)
- - Not Available (Late Production)
59 L-GN 432 MAP Sensor Signal
60-63 - - Not Used (Early Production)
- - Not Available (Late Production)
64 D-BU 2364 Cooling Fan Speed Signal
65 - - Not Used (Early Production)
- - Not Available (Late Production)
66 YE 400 Signal High - Front
67 - - Not Used (Early Production)
Pin Wire Color Circuit No. Function
- - Not Available (Late Production)
68 L-GN 5492 Cylinder Shutoff Solenoid Control (4)
69 OG 5494 Cylinder Shutoff Solenoid Control(2)
70-72 - - Not Used (Early Production)
- - Not Available (Late Production)
73 - - Not Used
Created/Modified Date: 6/10/2016 9:12:24 PM
