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 MANUALSBUICK2010LUCERNE CXL, 3.9 1REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 314 (WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - 1-2 SHIFT SOLENOID THROUGH ENGINE CONTROL MODULE X1)COMPONENT CONNECTOR END VIEWSBODY CONTROL MODULE (BCM) X4
2010 Buick Lucerne CXL, 3.9 1
Body Control Module (BCM) X4
2010 Buick Lucerne CXL, 3.9 1SECTION Body Control Module (BCM) X4
WARNING: This page is about a different car, the 2011 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.
Body Control Module (BCM) X4
| Pin | Wire | Circuit | Function |
|---|---|---|---|
| 1 | 0.8 RD/YE | 340 | Battery Positive Voltage |
| 2 | 0.8 TN/PK | 5040 | Battery Positive Voltage |
| 3 | 0.8 RD/GN | 440 | Battery Positive Voltage |
| 4 | 0.8 YE/VT | 1240 | Battery Positive Voltage |
| 5 | 0.8 D-BU/WH | 1315 | Right Front Turn Signal Lamp Supply Voltage |
| 6 | - | - | Not Used |
| 7 | 1 YE | 196 | Windshield Wiper Motor Park Switch Signal |
| 8 | - | - | Not Used |
| 9 | 0.35 BK | 50 | Ground |
| 10 | 0.35 TN/OG | 3640 | Battery Positive Voltage |
| 11 | 0.35 D-GN/WH | 1317 | Fog Lamp Relay Control |
| 12-13 | - | - | Not Used |
| 14 | 0.35 L-GN | 482 | Outside Moisture Sensor Signal 2 (CE1) |
| 15 | 0.35 OG/GY | 227 | Windshield Washer Relay Control |
| 16 | 0.35 TN/WH | 1969 | Headlamp High Beam Relay Control |
| 17 | 0.35 PK/BK | 109 | Hood Ajar Switch Signal |
| 18 | 0.35 TN/YE | 481 | Outside Moisture Sensor Signal 1 (CE1) |
| 19 | 0.35 D-BU/WH | 5985 | Accessory Wake up Serial Data |
| 20 | 0.35 D-BU | 6561 | Right Cornering Lamp Relay Control |
| 21 | 0.35 PK | 1439 | Run/Crank Ignition 1 Voltage |
| 22-23 | - | - | Not Used |
| 24 | 0.35 BN | 6560 | Left Cornering Lamp Relay Control |
| 25 | 0.35 WH | 1080 | Park Lamp Relay Control |
Connector Part Information
|
Terminal Part Information
|
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.