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HOMESERVICE MANUALSCHEVROLET2008CHEVY EXPRESS G2500, VAN CARGO, 6.6 6REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 918 (ENGINE CONTROL SYSTEM & FUEL - 4.8L, 5.3L, 6.0L AND 6.2L - INTRODUCTION (2 OF 2))COMPONENT LOCATORENGINE CONTROL MODULE CONNECTORSENGINE CONTROL MODULE (ECM) C2
2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6

Engine Control Module (ECM) C2

2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6SECTION Engine Control Module (ECM) C2
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2007 GMC Yukon XL, 2007 GMC Yukon, 2007 Chevrolet Tahoe, 2007 Chevrolet Suburban, and 2007 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Engine Control Module (ECM) C2 Connector End View
GM1715238Courtesy of GENERAL MOTORS CORP.
Engine Control Module (ECM) C2 Connector Parts Information

Connector Part Information 
  • OEM: 13511426
  • Service: 19115670
  • Description: 80-Way F Receptacle 0.64 2.8 Sealed (GY)
Terminal Part Information 
  • Pins: 2-3, 16, 34-35, 41-53, 58, 63-69
  • Terminal/Tray: 33467-0003/23
  • Core/Insulation Crimp: H/H
  • Release Tool/Test Probe: J-38125-213/J-35616-64B (L-BU)
  • Pins: 5-14, 17-33, 37-40, 56-57, 59-61, 70-79
  • Terminal/Tray: 33467-0005/23
  • Core/Insulation Crimp: Pins 5-14, 17-22, 29-33, 37-40, 56-57, 59-61, 70-79: J/J
  • Core/Insulation Crimp: Pins 26-27: K/K
  • Release Tool/Test Probe: J-38125-213/J-35616-64B (L-BU)
Engine Control Module (ECM) C2 Connector Terminal Identification

Pin Wire Color Circuit No. Function
1 - - Not Used
2 PU/WH 6270 5-Volt Reference
3 GY 2701 5-Volt Reference
4 - - Not Used
5 BN 582 TAC Motor Control - 2
6 YE 581 TAC Motor Control - 1
7 - - Not Used
8 D-GN/WH 428 EVAP Canister Purge Solenoid Control
9 GY 5493 Cylinder Shutoff Solenoid Control (3)
10 D-BU 5491 Cylinder Shutoff Solenoid Control (1)
11 OG 5494 Cylinder Shutoff Solenoid Control (4)
12 GY/WH 3113 HO2S Heater Low Control - Bank 1 Sensor 1
13 L-GN 3212 HO2S Heater Low Control - Bank 2 Sensor 1
14 L-GN/BK 5492 Cylinder Shutoff Solenoid Control (2)
15 - - Not Used
16 PU 5284 Camshaft Actuator Solenoid Control (L76,L92,LY6)
17 D-BU/WH 878 Fuel Injector 8 Control
18 TN/WH 845 Fuel Injector 5 Control
19 YE/BK 846 Fuel Injector 6 Control
20 TN 1744 Fuel Injector 1 Control
21 YE 410 ECT Sensor Signal
22 TN 2761 Low Reference
23-25 - - Not Used
26 D-BU 496 Knock Sensor 1 Signal
27 GY 1716 Low Reference
28 - - Not Used
29 L-BU 1876 Knock Sensor 2 Signal
30 GY 2303 Low Reference
31 - - Not Used
32 GY 23 Generator Field Duty Cycle Signal
33 BN 1174 Oil Level Switch Signal
34 BK 2755 Low Reference
35 TN 2752 Low Reference
36 - - Not Used
37 L-GN/BK 1745 Fuel Injector 2 Control
38 PK/BK 1746 Fuel Injector 3 Control
39 L-BU/BK 844 Fuel Injector 4 Control
40 OG/BK 877 Fuel Injector 7 Control
41 GY 2705 5-Volt Reference
42 - - Not Used
43 GY 2704 5-Volt Reference
44 D-BU 6259 5-Volt Reference
45-49 - - Not Used
50 TN/WH 331 Oil Pressure Sensor Signal
51 - - Not Used
52 TN 2199 Low Reference (L76, L92, LY6)
53 OG/BK 469 Low Reference
54-55 - - Not Used
56 TN 1664 HO2S Low Signal - Bank 1 Sensor 1
57 PU/WH 1665 HO2S High Signal - Bank 1 Sensor 1
58 L-GN 432 MAP Sensor Signal
59 PU 1666 HO2S High Signal - Bank 2 Sensor 1
60 TN 1667 HO2S Low Signal - Bank 2 Sensor 1
61 BN 25 Charge Indicator Control/Charge Indicator Signal
62 - - Not Used
63 PU 486 TP Sensor 2 Signal
64 D-BU/WH 6265 CMP Sensor Signal
65 D-GN 485 TP Sensor 1 Signal
66 BN 6266 Low Reference
67 - - Not Used
68 WH/BK 6271 CKP Sensor Signal
69 GY/BK 6272 Low Reference
70 PU 2121 IC 1 Control
71 PU/WH 2128 IC 8 Control
72 OG 2127 IC 7 Control
73 OG/WH 2122 IC 2 Control
74 L-BU/WH 2126 IC 6 Control
75 D-GN 2125 IC 5 Control
76 D-GN/WH 2124 IC 4 Control
77 L-BU 2123 IC 3 Control
78 BN 2129 Low Reference
79 BN/WH 2130 Low Reference
80 - - Not Used
RENDER: 1.0x

NO RELATED

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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.