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.
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HOMESERVICE MANUALSCHEVROLET2006CHEVY EXPRESS G2500, VAN CARGO EXTENDED, 5.3 T, 4L60E/M30REPAIR AND DIAGNOSIS (SINGLE PAGE)QUICK LOOKUPSWIRING DIAGRAMSOEM CONNECTOR END VIEWSCOMPUTER/INTEGRATING SYSTEMS CONNECTOR END VIEWSBODY CONTROL MODULE (BCM) CONNECTOR END VIEW - C4
2006 Chevrolet Chevy Express G2500, Van Cargo Extended, 5.3 T, 4L60E/M30
Body Control Module (BCM) Connector End View - C4
2006 Chevrolet Chevy Express G2500, Van Cargo Extended, 5.3 T, 4L60E/M30SECTION Body Control Module (BCM) Connector End View - C4
Body Control Module (BCM) - C4
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A1 | L-GN | 80 | Key In Ignition Switch Signal |
| A2 | YE | 307 | Headlamp Switch Flash to Pass Signal |
| A3 | PK | 1020 | Ignition 0 Voltage |
| A4 | PK | 39 | Ignition 1 Voltage |
| A5 | L-GN | 1177 | Door Open Switch Signal |
| A6 | - | - | Not Used |
| A7 | L-BU | 1134 | Park Brake Switch Signal |
| A8-A9 | - | - | Not Used |
| A10 | YE/BK | 1181 | Rear Door Open Switch Signal (Passenger/Cargo) |
| A11 | - | - | Not Used |
| A12 | WH | 103 | Headlamp Switch Headlamps On Signal |
| B1-B2 | - | - | Not Used |
| B3 | YE | 343 | Accessory Voltage |
| B4 | TN | 126 | Left Front Door Open Switch Signal |
| B5 | L-BU | 195 | Door Lock Control (AU3) |
| B6 | GY/BK | 2226 | Dimming Return |
| B7-B8 | - | - | Not Used |
| B9 | D-BU/WH | 1495 | Courtesy Lamps On Signal |
| B10 | WH | 194 | Door Unlock Control (AU3) |
| B11-B12 | - | - | Not Used |
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.