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 MANUALSBUICK2006TERRAZA CXL, 3.5 L, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 292 (DATA COMMUNICATION SYSTEM)COMPONENT LOCATORDATA COMMUNICATION CONNECTORSBODY CONTROL MODULE (BCM) C1
2006 Buick Terraza CXL, 3.5 L, AWD
Body Control Module (BCM) C1
2006 Buick Terraza CXL, 3.5 L, AWDSECTION Body Control Module (BCM) C1
WARNING: This page is about a different car, the 2007 Chevrolet Monte Carlo and 2007 Chevrolet Impala. However, it is still accessible from the selected car via links, so may be relevant.
Body Control Module (BCM) C1 Connector Parts Information
Connector Part Information
|
Terminal Part Information
|
Body Control Module (BCM) C1 Connector Terminal Identification
| Pin | Wire Color | Circuit No. | Function |
|---|---|---|---|
| 1 | - | - | Not Used |
| 2 | WH | 1390 | Off/Run/Crank Voltage |
| 3 | GY | 1884 | Cruise Control Switch Signal |
| 4 | WH/BK | 1073 | Ignition Key Resistor Signal |
| 5 | L-GN | 1715 | Windshield Wiper Switch High Signal |
| 6 | D-BU | 1796 | Steering Wheel Controls Signal |
| 7 | - | - | Not Used |
| 8 | BK/WH | 1251 | Ground |
| 9 | L-BU | 1714 | Windshield Wiper Switch Low Signal |
| 10-13 | - | - | Not Used |
| 14 | PK | 3 | Ignition 1 Voltage |
| 15 | L-BU/WH | 1414 | Left Turn Signal Switch Signal |
| 16 | D-BU/WH | 1415 | Right Turn Signal Switch Signal |
| 17 | PU | 1375 | Steering Wheel Control Supply Voltage |
| 18 | PU | 524 | Headlamp Dimmer Switch High Beam Signal |
| 19 | TN | 2144 | Hazard Switch Signal |
| 20 | - | - | Not Used |
| 21 | BN | 4 | Accessory Voltage |
| 22-23 | - | - | Not Used |
| 24 | PK | 94 | Windshield Washer Switch Signal |
| 25 | BN | 1356 | Flash To Pass Switch Signal |
| 26 | D-GN/WH | 1135 | A/T Shift Lock Control Solenoid Supply Voltage (w/Column Shifter) |
| 27 | - | - | Not Used |
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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.