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.
K71 Transmission Control Module X2 (MRC)
2018 Buick Regal BaseSECTION K71 Transmission Control Module X2 (MRC)
Connector Part Information
|
Terminal Part Information
| Terminal Type ID | Terminated Lead | Diagnostic Test Probe | Terminal Removal Tool | Service Terminal | Tray Name | Core Crimp | Insulation Crimp |
|---|---|---|---|---|---|---|---|
| I | Not Required | No Tool Required | No Tool Required | Not Required | Not Required | Not Required | Not Required |
| Pin | Size | Color | Circuit | Function | Terminal Type ID | Option |
|---|---|---|---|---|---|---|
| 1 | 0.5 | VT | 4183 | Torque Converter Clutch Pressure Solenoid Control (+) | I | - |
| 2 | 0.5 | BN | 4182 | Torque Converter Clutch Pressure Solenoid Control (-) | I | - |
| 3 | 0.5 | BU | 4190 | Transmission Pressure Solenoid Control C+ | I | - |
| 4 | 0.5 | YE | 4191 | Transmission Pressure Solenoid Control C- | I | - |
| 5 | 0.5 | WH | 6404 | Clutch E Control | I | - |
| 6 | 0.5 | GN | 1530 | Transmission Mainline Pressure Solenoid Control | I | - |
| 7 | 0.5 | GY | 5503 | Transmission Mainline Pressure Solenoid Low Reference | I | - |
| 8 | 0.5 | RD | 4193 | Transmission Pressure Solenoid Control B+ | I | - |
| 9 | 0.5 | GN | 4192 | Transmission Pressure Solenoid Control B- | I | - |
| 10 | 0.5 | OG | 585 | Transmission Oil Temperature Sensor Signal | I | - |
| 11 | 0.5 | GY | 4172 | Transmission Speed Output Signal High | I | - |
| 12 | 0.5 | BK | 1798 | Low Reference | I | - |
| 13 | 0.5 | YE | 4194 | Transmission Pressure Solenoid Control A+ | I | - |
| 14 | 0.5 | VT | 4195 | Transmission Pressure Solenoid Control A- | I | - |
| 15 - 16 | - | - | - | Not Occupied | - | - |
| 17 | 0.5 | RD | 4173 | Transmission Speed Input Signal Low | I | - |
| 18 | 0.5 | WH | 4174 | Transmission Speed Input Signal High | I | - |
| 19 | 0.5 | OG | 586 | Transmission Oil Temperature Sensor Low Reference | I | - |
| 20 | 0.5 | BU | 6356 | Output Speed Low Signal | I | - |
| 21 | 0.5 | YE | 4189 | Transmission Pressure Solenoid Control D+ | I | - |
| 22 | 0.5 | BN | 4188 | Transmission Pressure Solenoid Control D- | I | - |
| 23 | 0.5 | GN | 1222 | 1 Shift Solenoid Valve Control | I | - |
| 24 - 27 | - | - | - | Not Occupied | - | - |
| 28 | 0.5 | WH | 1223 | 2 Shift Solenoid Valve Control | I | - |
| 29 - 33 | - | - | - | Not Occupied | - | - |
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.