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 MANUALSCHEVROLET2018SILVERADO 2500 HD WT, 2D PICKUP, 6.0L ENG VIN G, RWD, GASREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 2802 (ELECTRICAL COMPONENT LOCATOR - INSTRUMENT PANEL/CENTER CONSOLE COMPONENT VIEWS)INSTRUMENT PANEL/CENTER CONSOLE COMPONENT VIEWSFRONT OF HVAC ASSEMBLY COMPONENTS
2018 Chevrolet Silverado 2500 HD WT, 2D Pickup, 6.0L Eng VIN G, RWD, Gas
Front of HVAC Assembly Components
2018 Chevrolet Silverado 2500 HD WT, 2D Pickup, 6.0L Eng VIN G, RWD, GasSECTION Front of HVAC Assembly Components
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2016 GMC Sierra 3500 HD, 2016 GMC Sierra 2500 HD, 2016 GMC Sierra 1500, 2016 Chevrolet Silverado 3500 HD, and 2016 Chevrolet Silverado 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
Front of HVAC Assembly Components
| Items |
|---|
| 1. M4 Air Inlet Door Actuator M4 Air Inlet Actuator |
| 2. K33 HVAC Control Module K33 HVAC Control Module X1K33 HVAC Control Module X2K33 HVAC Control Module X3K33 HVAC Control Module X4 |
| 3. M6L Air Temperature Door Actuator - Left M6L Air Temperature Door Actuator - Left |
| 4. E40 Electrical Auxiliary Heater (C32) |
| 5. M37L Mode Door Actuator - Left M37L Mode Door Actuator - Left |
| 6. B7D Air Temperature Sensor - Duct Left Lower (CJ2) |
| 7. B7E Air Temperature Sensor - Duct Right Lower (CJ2) |
RENDER: 1.0x
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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.