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 MANUALSCHEVROLET2025TRAILBLAZER ACTIV, FWDREPAIR AND DIAGNOSIS (SINGLE PAGE)ELECTRICALCOMPONENT LOCATIONSELECTRICAL COMPONENT LOCATOR AND WIRING HARNESS ROUTING VIEWSCOMPONENT LOCATORINSTRUMENT PANEL/CENTER CONSOLE COMPONENT VIEWSHVAC COMPONENTS - 2 OF 2
2025 Chevrolet Trailblazer ACTIV, FWD
HVAC Components - 2 of 2
2025 Chevrolet Trailblazer ACTIV, FWDSECTION HVAC Components - 2 of 2
| Items |
|---|
| 1. M37 Mode Door Actuator M37 Mode Door Actuator |
| 2. M4 Air Inlet Door Actuator M4 Air Inlet Door Actuator |
| 3. K33 HVAC Control Module (C67/C68) K33 HVAC Control Module X1 (C67 / C68) , or K33 HVAC Control Module X2 (C67 / C68) , or K33 HVAC Control Module X3 (C67 / C68) |
| 4. E40 Electrical Auxiliary Heater (C32) E40 Electrical Auxiliary Heater X1 (C32) , or E40 Electrical Auxiliary Heater X2 (C32) |
| 5. B39 A/C Evaporator Temperature Sensor B39 A/C Evaporator Temperature Sensor |
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.