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.
2009 Hummer H2 V8-6.2LFACTORY OEM SERVICE PROCEDURE
HVAC Control Module Replacement
HVAC Control Module Replacement
Removal Procedure
1. Remove the center instrument panel (I/P) air outlet bezel. Refer to Instrument Panel Center Air Outlet Bezel Replacement (Instrument Panel Center Air Outlet Bezel Replacement).
2. Remove the screws from the HVAC control module (2).
3. Reposition the HVAC control module (2) from the I/P panel (1).
4. Disconnect the electrical connectors from the HVAC control module (2).
Installation Procedure
Note: The key should be in the off position when connecting the electrical connectors to ensure proper calibration.
1. Connect the electrical connectors to the HVAC control module (2).
Note: Ensure that the HVAC control module tabs lock into place.
2. Install the HVAC control module (2) to the I/P (1).
Caution: Refer to Fastener Caution (Fastener Caution).
3. Install the screws to the HVAC control module (2).
Tighten the screws to 1.9 Nm (17 lb in).
4. Install the center I/P air outlet bezel. Refer to Instrument Panel Center Air Outlet Bezel Replacement (Instrument Panel Center Air Outlet Bezel Replacement).
Note: Do not adjust any controls on the HVAC control module while the HVAC control module is calibrating.
If interrupted improper HVAC performance will result.
5. Start the vehicle and let run for one minute.
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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