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.
2012 Chevrolet Avalanche 2WD V8-5.3LFACTORY OEM SERVICE PROCEDURE
Blower Motor Control Module - Auxiliary
Luggage Compartment/Rear of Vehicle Component Views
Auxiliary HVAC Components (LWB with C69)
1 - Mode Actuator - Auxiliary
2 - Air Temperature Sensor - Upper Auxiliary (CJ2)
3 - Air Temperature Actuator - Auxiliary
4 - Blower Motor - Auxiliary
5 - Blower Motor Control Module - Auxiliary
6 - Air Temperature Sensor - Lower Auxiliary
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.