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 MANUALSCHEVROLET2008CHEVY EXPRESS G3500, VAN PASSENGER EXTENDEDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 131 (WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT VIEWS & COMPONENT CONNECTOR END VIEWS)COMPONENT CONNECTOR END VIEWSBODY CONTROL MODULE (BCM) - X4
2008 Chevrolet Chevy Express G3500, Van Passenger Extended
Body Control Module (BCM) - X4
2008 Chevrolet Chevy Express G3500, Van Passenger ExtendedSECTION Body Control Module (BCM) - X4
WARNING: This page is about a different car, the 2008 Chevrolet Malibu Classic. However, it is still accessible from the selected car via links, so may be relevant.
Body Control Module (BCM) - X4
| Pin | Wire | Circuit | Function |
|---|---|---|---|
| A1-A12 | - | - | Not Used |
| B1 | 0.35 OG | 228 | Windshield Washer Pump Control |
| B2 | 0.35 GY | 8 | Instrument Panel Lamp Supply Voltage (K34/UK3) |
| B3 | 0.35 BN | 41 | Ignition 3 Voltage (C60) |
| B4-B5 | - | - | Not Used |
| B6 | 0.35 BN | 141 | Ignition 3 Voltage |
| B7-B9 | - | - | Not Used |
| B10 | 3 YE | 443 | Accessory Voltage (C25) |
| B11-B12 | - | - | Not Used |
| C1 | 1 RD/WH | 340 | Battery Positive Voltage |
| C2 | 0.35 GY | 8 | Instrument Panel Lamp Supply Voltage |
| 0.35 GY | 8 | Instrument Panel Lamp Supply Voltage | |
| C3 | 0.35 L-GN | 377 | Serial Data |
| C4 | 0.35 OG | 52 | High Blower Motor Control (C60) |
| C5 | 0.35 BN | 9 | Park Lamp Supply Voltage (C60) |
| C6-C7 | - | - | Not Available |
| C8 | 0.35 BN | 4 | Accessory Voltage Signal |
| 0.35 BN | 4 | Accessory Voltage Signal | |
| C9-C12 | - | - | Not Used |
| D1 | 0.35 RD/WH | 1040 | Battery Positive Voltage |
| D2 | - | - | Not Used |
| D3 | 0.35 PK | 3 | Ignition 1 Voltage Signal |
| 0.35 PK | 3 | Ignition 1 Voltage Signal | |
| D4 | 0.35 PU | 65 | Blower Motor Supply Voltage (C60) |
| D5 | - | - | Not Used |
| D6-D7 | - | - | Not Available |
| D8 | 0.35 YE | 143 | Accessory Voltage |
| D9 | - | - | Not Used |
| D10 | 0.35 RD/WH | 740 | Battery Positive Voltage (JF4) |
| 0.35 RD/WH | 740 | Battery Positive Voltage (JF4) | |
| D11-D12 | - | - | Not Used |
| E1 | 0.35 RD/WH | 440 | Battery Positive Voltage |
| 0.35 RD/WH | 440 | Battery Positive Voltage | |
| E2 | 0.35 RD/BK | 442 | Battery Positive Voltage (C68) |
| E3 | 0.35 D-BU | 101 | Blower Motor Supply Voltage (C60) |
| E4-E9 | - | - | Not Used |
| E10 | 0.35 RD/WH | 840 | Battery Positive Voltage (UE1) |
| E11 | - | - | Not Used |
| E12 | 0.35 BK | 650 | Ground |
| F1 | 0.35 RD/WH | 1440 | Battery Positive Voltage |
| 0.35 RD/WH | 1440 | Battery Positive Voltage | |
| F2 | 0.35 GY | 8 | Instrument Panel Lamp Supply Voltage |
| 0.35 GY | 8 | Instrument Panel Lamp Supply Voltage (JF4) | |
| F3 | 0.35 GY | 8 | Instrument Panel Lamp Supply Voltage |
| 0.35 GY | 8 | Instrument Panel Lamp Supply Voltage (T96) | |
| F4-F5 | - | - | Not Used |
| F6 | 0.35 PK | 339 | Ignition 1 Voltage |
| F7-F8 | - | - | Not Used |
| F9 | 0.35 PK | 1039 | Ignition 1 Voltage (Except SS) |
| F10-F12 | - | - | Not Used |
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:
- • 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.