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 X3
2018 Buick Regal BaseSECTION K33 HVAC Control Module X3
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 | - | BN | 516 | Upper Left Air Temperature Sensor Signal | I | - |
| 2 | - | GY | 3165 | Mode Door Stepper Motor Control 1 | I | - |
| 3 | - | BN/GN | 3166 | Mode Door Stepper Motor Control 2 | I | - |
| 4 | - | BU/BN | 3167 | Mode Door Stepper Motor Control 3 | I | - |
| 5 | - | BN | 3168 | Mode Door Stepper Motor Control 4 | I | - |
| 6 - 8 | - | - | - | Not Occupied | - | - |
| 9 | - | BK/YE | 1791 | Air Temperature Door Control Low Reference | I | - |
| 10 | - | - | - | Not Occupied | - | - |
| 11 | - | WH/BK | 3169 | Temp Door Stepper Motor Control 1 | I | - |
| 12 | - | VT/GN | 3170 | Temp Door Stepper Motor Control 2 | I | - |
| 13 | - | YE/GN | 3171 | Temp Door Stepper Motor Control 3 | I | - |
| 14 | - | GY/BU | 3172 | Temp Door Stepper Motor Control 4 | I | - |
| 15 | - | BN/VT | 7572 | HVAC Motor Control | I | - |
| 16 | - | BU/GY | 3173 | Air Inlet Door Stepper Motor Control 1 | I | - |
| 17 | - | BN/WH | 3174 | Air Inlet Door Stepper Motor Control 2 | I | - |
| 18 | - | YE | 3175 | Air Inlet Door Stepper Motor Control 3 | I | - |
| 19 | - | WH | 3176 | Air Inlet Door Stepper Motor Control 4 | I | - |
| 20 | - | GY | 6137 | EVAP Core Temperature Sensor Signal | I | - |
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.