Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
SYS.OK|MANUAL.DBβ LIVE
HOMESERVICE MANUALSCHEVROLET2008CHEVY EXPRESS G2500, VAN CARGO, 6.6 6REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 2510 (WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - A/C COMPRESSOR THROUGH ELECTRONIC POWER STEERING MODULE X1)COMPONENT CONNECTOR END VIEWSBODY CONTROL MODULE (BCM) X3
2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6
Body Control Module (BCM) X3
2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6SECTION Body Control Module (BCM) X3
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2011 GMC Yukon XL, 2011 GMC Yukon, 2011 Chevrolet Tahoe, 2011 Chevrolet Suburban, and 2011 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
Body Control Module (BCM) X3
| Pin | Wire | Circuit | Function |
|---|---|---|---|
| 1 | - | - | Not Used |
| 2 | 0.5 RD/WH | 2140 | Battery Positive Voltage |
| 3 | 0.5 RD/WH | 3840 | Battery Positive Voltage |
| 4 | - | - | Not Used |
| 5 | 1 BK/WH | 1851 | Ground |
| 6-7 | - | - | Not Used |
| 8 | 0.5 TN/BK | 2500 | High Speed GMLAN Serial Data Bus + |
| 9 | 0.5 TN | 2501 | High Speed GMLAN Serial Data Bus - |
| 10 | 0.35 D-GN | 5060 | Low Speed GMLAN Serial Data |
| 11 | 0.35 D-GN | 44 | Instrument Panel Lamps Dimmer Switch Signal |
| 12 | 0.35 OG/WH | 812 | 12-Volt Reference or I/P Dimming Voltage Reference |
| 13 | 0.35 PU | 7062 | Brake Pedal Switch Normally Closed Contact Signal |
| 14-15 | - | - | Not Used |
| 16 | 0.5 TN/BK | 2500 | High Speed GMLAN Serial Data Bus + |
| 17 | 0.5 TN | 2501 | High Speed GMLAN Serial Data Bus - |
| 18 | 0.35 YE | 6817 | LED Backlight Dimming Control |
| 19 | 0.35 L-BU | 5986 | Serial Data Communication Enable |
| 20 | - | - | Not Used |
| 21 | 0.35 OG | 192 | Front Fog Lamp Switch Signal (T96) |
| 0.5 D-BU/YE | 6841 | Upfitter Provision (PPV or 5W4) | |
| 22 | 0.35 L-GN/WH | 7158 | Cruise Control Indicator Dimming Signal |
| 23-24 | - | - | Not Used |
| 25 | 0.35 PU/WH | 6816 | Indicator Dimming Control |
Connector Part Information
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Terminal Part Information
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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:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.