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.
2006 Hummer H2 V8-6.0LFACTORY OEM SERVICE PROCEDURE
Control Assembly: Service and Repair
HVAC CONTROL MODULE REPLACEMENT
REMOVAL PROCEDURE
1. Remove the center I/P trim bezel.
2. Remove the screws from the HVAC control module (2).
3. Depress the HVAC control module tabs (3) and remove the HVAC control module (2) from the I/P (4).
4. Reposition the HVAC control module (2) from the I/P panel (1).
5. Disconnect the electrical connectors from the HVAC control module (2).
INSTALLATION PROCEDURE
1. Connect the electrical connectors to the HVAC control module (2).
IMPORTANT: The Key should be in the off position when connecting the electrical connectors to ensure proper calibration.
2. Install the HVAC control module (2) to the I/P (1).
IMPORTANT: Ensure that the HVAC control module tabs lock into place.
3. Install the screws to the HVAC control module (2).
Tighten the screws to 1.9 N.m (17 lb in).
NOTE: Refer to Fastener Notice in Service Precautions.
4. Install the center I/P trim bezel.
5. Start the vehicle and let run for one minute.
IMPORTANT:
- Do not adjust any controls on the HVAC control module while the HVAC control module is calibrating.
- If interrupted improper HVAC performance will result.
Factory Service Tools
Use the Manual With the Right Hardware
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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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