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 MANUALSGMC2011YUKON BASE, 5.3 0, RWDREPAIR AND DIAGNOSIS (SINGLE PAGE)QUICK LOOKUPSWIRING DIAGRAMSWIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - ELECTRONIC STEERING CONTROL MODULE X2 THROUGH MEMORY SEAT MODULECOMPONENT CONNECTOR END VIEWSHVAC CONTROL MODULE X3 (CJ2)
2011 GMC Yukon Base, 5.3 0, RWD
HVAC Control Module X3 (CJ2)
2011 GMC Yukon Base, 5.3 0, RWDSECTION HVAC Control Module X3 (CJ2)
HVAC Control Module X3 (CJ2)
| Pin | Wire | Circuit | Function |
|---|---|---|---|
| 1 | 0.35 TN | 518 | Lower Left Air Temperature Sensor Signal |
| 2 | 0.35 YE/BK | 713 | Defrost/Heater Mode Valve Position Sensor Signal |
| 3 | 0.35 PU | 1838 | Recirculation Door Position Signal |
| 4 | 0.35 GY/BK | 754 | Blower Motor Speed Control |
| 5-9 | - | - | Not Used |
| 10 | 0.35 GY | 598 | 5-Volt Reference |
| 11 | 0.35 TN | 520 | Lower Right Air Temperature Sensor Signal |
| 12 | 0.35 L-BU | 733 | Air Temperature Door Position Signal |
| 13 | 0.35 D-BU | 1646 | Auxiliary Air Temperature Door Position Signal (C69) |
| 14 | 0.5 D-BU | 204 | A/C Low Pressure Sensor Signal (HP2) |
| 0.35 WH | 2622 | Evaporator Temperature Signal (except HP2) | |
| 15 | 0.35 TN | 2273 | Mode Door Control |
| 16 | 0.35 D-BU | 1199 | Air Temperature Door Control |
| 17 | 0.35 D-GN | 1614 | Recirculation Door Control |
| 18 | 0.35 WH/BK | 1236 | Auxiliary Air Temperature Door Control (C69) |
| 19 | 0.5 TN | 914 | Low Reference (HP2) |
| 20 | 0.35 YE | 1791 | Low Reference |
Connector Part Information
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Terminal Part Information
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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:
- 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.