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.
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HOMESERVICE MANUALSCHEVROLET2001SUBURBAN C1500REPAIR AND DIAGNOSISHEATING, VENTILATION & A/C (HVAC)HVAC CONTROL SYSTEMSHVAC SYSTEM - MANUALCOMPONENT LOCATORHVAC CONNECTOR END VIEWSHVAC CONTROL MODULE - C1
2001 Chevrolet Suburban C1500
HVAC Control Module - C1
2001 Chevrolet Suburban C1500SECTION HVAC Control Module - C1
HVAC Control Module - C1
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | DK GRN | 71 | Off Blower Motor Control |
| B | WHT | 119 | Mode Actuator Control |
| C | BLK | 2450 | Ground |
| D | DK GRN | 1614 | Recirculation Actuator Control |
| E | GRY | 8 | Instrument Panel Lamp Supply Voltage - 1 |
| F | DK BLU | 1199 | Air Temperature Actuator Control |
| G | LT BLU | 733 | Air Temperature Actuator Position Signal |
| H | GRY | 598 | 5 Volt Reference |
| J | WHT | 193 | Rear Defog Relay Control |
| K | BRN | 341 | Ignition 3 Voltage |
| L | LT BLU | 203 | A/C Request Signal |
| M | RED | 708 | Mode Actuator Position Signal |
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.