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.
2008 Pontiac Grand Prix V6-3.8LFACTORY OEM SERVICE PROCEDURE
Control Module HVAC: Locations
HVAC Case Components
1 - Air Temperature Sensor - Upper Left
2 - Air Temperature Sensor - Upper Right
3 - Blower Motor Control Processor
4 - Actuator Temperature Valve
5 - Blower Motor
6 - Actuator Temperature Valve
7 - Actuator Mode
8 - Ait Temperature Sensor - Lower Right
9 - Air Temperature Sensor - Lower Left
10 - Actuator Temperature Valve
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.
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