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.
K33 HVAC Control Module X4 (CJ2)
2018 Buick Regal BaseSECTION K33 HVAC Control Module X4 (CJ2)
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 | Not Available | No Tool Required | Not Required | Not Required | Not Required | Not Required |
| Pin | Size | Color | Circuit | Function | Terminal Type ID | Option |
|---|---|---|---|---|---|---|
| 1 - 4 | - | - | - | Not Occupied | - | - |
| 5 | - | YE/BK | 3181 | Temp Door Stepper Motor Passenger Control 1 | I | - |
| 6 | - | WH/BK | 3182 | Temp Door Stepper Motor Passenger Control 2 | I | - |
| 7 | - | WH/YE | 3183 | Temp Door Stepper Motor Passenger Control 3 | I | - |
| 8 | - | VT/GY | 3184 | Temp Door Stepper Motor Passenger Control 4 | I | - |
| 9 | - | BK/YE | 517 | Upper Right Air Temperature Sensor Signal | I | - |
| 10 | - | BN/VT | 7572 | HVAC Motor Control | I | - |
| 11 | - | BN | 518 | Lower Left Air Temperature Sensor Signal | I | - |
| 12 | - | BN/YE | 520 | Lower Right Air Temperature Sensor Signal | I | - |
| 13 - 20 | - | - | - | 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.