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HOMESERVICE MANUALSCHEVROLET2008CHEVY EXPRESS G2500, VAN CARGO, 6.6 6REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1860 (WIRING SYSTEMS AND POWER MANAGEMENT - ELECTRICAL CENTER IDENTIFICATION, COMPONENT CONNECTOR & SPLICE PACK CONNECTOR END VIEWS)COMPONENT CONNECTOR END VIEWSENGINE CONTROL MODULE (ECM) X2 (6.6L)
2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6

Engine Control Module (ECM) X2 (6.6L)

2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6SECTION Engine Control Module (ECM) X2 (6.6L)
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2009 GMC Savana Special, 2009 GMC Savana Camper Special, 2009 GMC Savana, 2009 Chevrolet RV Cutaway, and 2009 Chevrolet Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Engine Control Module (ECM) X2 (6.6L) - Connector End View
GM1544260Courtesy of GENERAL MOTORS CORP.
Engine Control Module (ECM) X2 (6.6L)

Pin Wire Circuit Function
1 2 PK 1439 Ignition Voltage
2 2 BK/WH 1551 Ground
3 2 PK 1439 Ignition Voltage
4 2 BK/WH 1551 Ground
5 2 PK 1439 Ignition Voltage
6 2 BK/WH 1551 Ground
7 0.8 BN 582 Throttle Actuator Control Motor Control - 2
8-11 - - Not Used
12 0.5 D-GN/WH 465 Fuel Pump Relay Control - Primary
13 0.5 TN 5514 Low Reference (C60)
14 - - Not Used
15 0.5 WH/BK 1164 5-Volt Reference 3
16 0.5 D-BU 507 Wait to Start Indicator Control
17-18 - - Not Used
19 0.5 YE 5991 Powertrain Relay Control
20 0.8 YE 581 Throttle Actuator Control Motor Control - 1
21 0.5 PK 439 Ignition Voltage
22 - - Not Used
23 0.8 OG 225 Generator Turn On Signal
24 0.8 BN/WH 7076 Charge Indicator Control (KD9)
25 - - Not Used
26 0.5 BN/WH 6141 Low Reference
27 0.5 GY 2700 5-Volt Reference 2 (C60)
28 0.5 GY 2365 5-Volt Reference 1
29 0.5 BN 1271 Low Reference
30 0.5 BN/WH 419 MIL Control
31 0.5 D-GN/WH 459 A/C Compressor Clutch Relay Control (C60)
32 - - Not Used
33 0.5 OG/BK 5764 Exhaust Gas Recirculation Valve Motor High Control
34 0.5 TN 2759 Low Reference
35 0.5 OG/BK 380 A/C Refrigerant Pressure Sensor Signal (C60)
36 0.5 PU 1589 Fuel Level Sensor Signal - Primary
37 - - Not Used
38 0.8 GY 23 Generator Field Duty Cycle Signal
39 0.5 OG/BK 1786 Ignition Lock Cylinder Control Actuator Signal
40 - - Not Used
41 0.5 D-BU 6863 Low Reference
42-43 - - Not Used
44 0.5 TN 2501 High Speed GMLAN Serial Data Bus (-)
45 0.5 OG/BK 6399 Replicated TOS Signal
46 0.5 L-GN/BK 5746 Exhaust Gas Recirculation (EGR) Valve Motor Low Control
47 0.5 BN 6062 Low Reference
48 0.5 YE 1578 Fuel Temperature Signal
49 0.5 D-BU 1161 Accelerator Pedal Position (APP) Sensor 1 Signal
50-51 - - Not Used
52 0.5 BN/WH 6783 Low Reference
53 - - Not Used
54 0.5 YE/BK 1827 Vehicle Speed Signal
55 - - Not Used
56 0.5 D-BU 5985 Accessory Wakeup Serial Data
57 0.5 TN/BK 2500 High Speed GMLAN Serial Data Bus (+)
58 - - Not Used
Connector Part Information 
  • OEM: 15462694
  • Service: 88988935
  • Description: 58-Way F Mixed Sealed (BK)
Terminal Part Information 
  • Pins: 1-6
  • Terminal/Tray: 1928498059/24
  • Core/Insulation Crimp: 2/5
  • Release Tool/Test Probe: J-38125-561/J-35616-35 (VT)
  • Pins: 7, 12, 13, 15, 16, 19-21, 23, 24, 26-31, 33-36, 38, 39, 41, 44-49, 52, 54, 56, 57
  • Terminal/Tray: 1928498135/19
  • Core/Insulation Crimp: J/J
  • Release Tool/Test Probe: J-38125-213/J-35616-64B (L-BU)
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

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.