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.
Body Control Module (BCM) X1
2008 Pontiac Grand Prix BaseSECTION Body Control Module (BCM) X1
WARNING: This page is about a different car, the 2008 Buick LaCrosse and 2008 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
Body Control Module (BCM) X1
| Pin | Wire | Circuit | Function |
|---|---|---|---|
| 1 | 0.35 BK | 860 | Front Windshield Wiper Switch High Signal |
| 2 | 0.35 WH | 1459 | Security System Sensor Supply Voltage |
| 3 | 0.35 PK | 1439 | Ignition 1 Voltage |
| 4 | 0.35 BK | 28 | Horn Relay Control |
| 5 | - | - | Not Used |
| 6 | 0.35 BK | 707 | RAP Relay Control |
| 7 | 0.35 BK/WH | 1969 | Headlamp High Beam Relay Control |
| 8 | 0.35 D-GN/WH | 1317 | Fog Lamp Relay Control (T96) |
| 9 | 0.35 PK/WH | 1970 | Headlamp Module Voltage Supply |
| 10 | 0.35 WH | 1080 | Park Lamp Relay Control |
| 11 | 0.35 YE | 749 | Security Indicator Control |
| 12 | 0.35 GY | 91 | Wiper Relay Control |
| 13 | 0.35 YE | 196 | Windshield Wiper Motor Park Switch Signal |
| 14 | 0.35 BK | 1835 | Security System Sensor Low Reference |
| 15 | 0.35 L-GN/BK | 1137 | DRL Ambient Light Sensor Signal |
| 16 | 0.35 L-GN | 526 | Stop Lamp Switch Signal |
| 17 | 0.5 BK | 1550 | Ground |
| 18 | - | - | Not Used |
| 19 | 0.5 BK/WH | 151 | Ground |
| 20 | 0.8 BK | 1650 | Ground |
| 21 | 0.35 YE | 5 | Crank Voltage |
| 22 | 0.35 PK | 1239 | Ignition 1 Voltage |
| 23 | 0.35 BN | 1141 | Ignition 3 Voltage |
| 24 | 0.35 TN | 185 | Low Washer Fluid Indicator Signal |
| 25 | 0.35 WH/BK | 644 | 12-Volt Reference |
| 26 | 0.35 PK/BK | 109 | Hood Ajar Switch Signal (AP3/AP8) |
| 27 | 0.35 GY | 598 | 10-Volt Reference |
| 28 | 0.35 BK | 552 | Low Reference |
| 29 | 0.35 BN/WH | 230 | I/P Dimming Return |
| 30 | 0.35 PK | 1444 | I/P Dimming Signal |
| 31 | 0.35 RD/WH | 812 | I/P Dimming Voltage Reference |
| 32 | - | - | Not Used |
| 33 | 0.35 BN | 5077 | Low Reference |
| 34 | 0.35 BN/WH | 1571 | Traction Control Switch Signal (U68, UH8) |
| 35 | 0.5 GY/BK | 1598 | I/P Dimming Return |
| 36 | 0.35 PK/BK | 1597 | Courtesy Lamps Switch On Signal |
| 37 | - | - | Not Used |
| 38 | 0.35 L-GN | 1037 | BCM Class 2 Serial Data |
| 39 | 0.5 WH | 17 | Stop Lamp Switch Signal |
| 40 | 0.35 L-GN | 80 | Key In Ignition Switch Signal |
| 41 | 0.5 L-BU/WH | 1314 | Left Front Turn Signal Lamp Supply Voltage |
| 42 | 0.5 D-BU/WH | 1315 | Right Front Turn Signal Lamp Supply Voltage |
| 43 | 0.8 GY/BK | 690 | Courtesy Lamp Supply Voltage |
| 44 | 0.8 OG | 1732 | Inadvertent Power Courtesy Lamp |
| 45 | - | - | Not Used |
| 46 | 0.8 OG | 340 | Battery Positive Voltage |
| 47 | 0.5 RD | 228 | Windshield Washer Pump Control |
| 48 | 0.8 GY | 8 | Instrument Panel Lamp Supply Voltage |
| 49 | 0.35 D-GN/WH | 1135 | A/T Shift Lock Control Solenoid Supply Voltage |
| 50 | 0.8 OG | 240 | Battery Positive Voltage |
| 51 | 0.8 OG | 2440 | Battery Positive Voltage |
| 52 | 0.8 OG | 1240 | Battery Positive Voltage |
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.