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.
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HOMESERVICE MANUALSPONTIAC2004AZTEK AWD V6-3.4L VIN EREPAIR AND DIAGNOSISHEATING AND AIR CONDITIONINGRELAYS AND MODULES - HVACCONTROL MODULE HVACSERVICE AND REPAIRHVAC SYSTEM - MANUAL
2004 Pontiac Aztek AWD V6-3.4L VIN E
HVAC System - Manual
2004 Pontiac Aztek AWD V6-3.4L VIN ESECTION HVAC System - Manual
HVAC CONTROL MODULE REPLACEMENT
REMOVAL PROCEDURE
1. Remove the I/P accessory trim plate.
2. Remove the HVAC control module retaining screws.
3. Pull the HVAC control module straight out from the I/P.
4. Disconnect the HVAC control module electrical connectors.
INSTALLATION PROCEDURE
IMPORTANT: The key should be in the off position when connecting the HVAC control module electrical connector to ensure proper calibration.
1. Connect the HVAC control module electrical connectors.
2. Push the HVAC control module into I/P opening.
NOTE: Refer to Fastener Notice in Service Precautions.
3. Install the HVAC control module retaining screws.
Tighten
Tighten the screws to 2.5 N.m (22 lb in).
4. Install the I/P accessory trim plate.
IMPORTANT: Do not adjust any controls on the HVAC control module while the HVAC control module is self-calibrating. If interrupted, improper HVAC performance will result. The engine must be running for proper calibration to occur.
5. Start and allow the engine to run for a least one minute.
REMOVAL PROCEDURE
1. Remove the I/P accessory trim plate.
2. Remove the HVAC control module retaining screws.
3. Pull the HVAC control module straight out from the I/P.
4. Disconnect the HVAC control module electrical connectors.
INSTALLATION PROCEDURE
IMPORTANT: The key should be in the off position when connecting the HVAC control module electrical connector to ensure proper calibration.
1. Connect the HVAC control module electrical connectors.
2. Push the HVAC control module into I/P opening.
NOTE: Refer to Fastener Notice in Service Precautions.
3. Install the HVAC control module retaining screws.
Tighten
Tighten the screws to 2.5 N.m (22 lb in).
4. Install the I/P accessory trim plate.
IMPORTANT: Do not adjust any controls on the HVAC control module while the HVAC control module is self-calibrating. If interrupted, improper HVAC performance will result. The engine must be running for proper calibration to occur.
5. Start and allow the engine to run for a least one minute.
RENDER: 1.0x
NO RELATED
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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.