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.
Control, A/C And Heater: Description: Notes
The A/C heater control for the rear Heating, Ventilation and Air Conditioning (HVAC) system is mounted in the headliner. The rear control allows intermediate seat passengers to adjust rear temperature and blower motor speed when the front A/C heater control is set to the Rear position, otherwise the front A/C heater control operates both the front and the rear HVAC systems.
The A/C heater control for the rear HVAC system is a slave potentiometer to the front A/C heater control.
The rear A/C heater control is diagnosed using a scan tool. Refer to DIAGNOSTIC CODE INDEX .
The rear A/C heater control cannot be repaired and must be replaced if inoperative or damaged.
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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.