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 247 (WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - RADIO ANTENNA MODULE THROUGH YAW SENSOR)COMPONENT CONNECTOR END VIEWSTRANSMISSION CONTROL MODULE (TCM)
2010 Buick Lucerne CXL, 3.9 1
Transmission Control Module (TCM)
2010 Buick Lucerne CXL, 3.9 1SECTION Transmission Control Module (TCM)
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.
Transmission Control Module (TCM)
| Pin | Wire | Circuit | Function |
|---|---|---|---|
| 1 | 0.35 TN | 418 | TCC Solenoid Valve Control |
| 2 | 0.35 L-GN | 1222 | Shift Solenoid Valve Control A |
| 3 | 0.35 OG | 1230 | ISS High Signal |
| 4-5 | - | - | Not Used |
| 6 | 0.35 BN | 2501 | High Speed GMLAN Serial Data Bus - |
| 7 | 0.35 BN/BK | 2500 | High Speed GMLAN Serial Data Bus + |
| 8-10 | - | - | Not Used |
| 11 | 0.5 BU/WH | 5985 | Accessory Wake-up Serial Data |
| 12-15 | - | - | Not Used |
| 16 | 0.5 PU | 401 | OSS Low Signal |
| 17 | 0.35 L-BU/WH | 1229 | PC Solenoid Valve Low Control |
| 18-19 | - | - | Not Used |
| 20 | 0.35 GN | 1223 | Shift Solenoid Valve Control B |
| 21-22 | - | - | Not Used |
| 23 | 0.35 GY | 773 | Transmission Range Switch Signal C |
| 24-25 | - | - | Not Used |
| 26 | 0.35 BU/WH | 1231 | ISS Low Signal |
| 27-28 | - | - | Not Used |
| 29 | 0.35 BN/WH | 771 | Transmission Range Switch Signal A |
| 30 | 0.35 BN | 2762 | TFT Sensor Low Reference |
| 31 | 0.5 PK | 539 | Ignition 1 Voltage |
| 32 | 0.5 RD/WH | 540 | Battery Positive Voltage |
| 33-34 | - | - | Not Used |
| 35 | 0.35 YE/BK | 1227 | TFT Sensor Signal |
| 36 | - | - | Not Used |
| 37 | 0.35 BN | 2501 | High Speed GMLAN Serial Data Bus - |
| 38 | 0.35 BN/BK | 2500 | High Speed GMLAN Serial Data Bus + |
| 39 | 0.35 WH | 776 | Transmission Range Switch Signal P |
| 40 | 0.35 OG/BK | 1228 | PC Solenoid Valve High Control |
| 41 | 0.5 YE/GY | 400 | OSS High Signal |
| 42 | 0.5 WH | 17 | Stop Lamp Switch Signal |
| 43-45 | - | - | Not Used |
| 46 | 0.35 YE | 772 | Transmission Range Switch Signal B |
| 47-48 | - | - | Not Used |
| 49 | 2 BK/WH | 1551 | Ground |
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.