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 MANUALSCHEVROLET2004TAHOE 2WD V8-4.8L VIN VREPAIR AND DIAGNOSISHEATING AND AIR CONDITIONINGCONTROL ASSEMBLYSERVICE AND REPAIRHVAC SYSTEM - AUTOMATICHVAC CONTROL MODULE REPLACEMENT
2004 Chevrolet Tahoe 2WD V8-4.8L VIN V
HVAC Control Module Replacement
2004 Chevrolet Tahoe 2WD V8-4.8L VIN VSECTION HVAC Control Module Replacement
HVAC CONTROL MODULE REPLACEMENT
REMOVAL PROCEDURE
1. Remove the instrument panel accessory trim plate.
2. Remove the accessory switch from the instrument panel.
3. Remove the screws from the HVAC control module.
4. Depress the control assembly retaining tabs and remove the HVAC control module from the instrument panel.
5. Disconnect the electrical connectors from the HVAC control module.
INSTALLATION PROCEDURE
1. Connect the electrical connectors to the HVAC control module.
IMPORTANT: The key should be in the off position when connecting the electrical connectors to ensure proper calibration.
2. Install the HVAC control module into the instrument panel.
3. Install the screws to the HVAC control module.
NOTE: Refer to Fastener Notice in Service Precautions.
Tighten the screws to 1.9 N.m (17 lb in).
4. Install the accessory switch to the instrument panel.
5. Install the instrument panel accessory trim plate.
6. 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.
.
REMOVAL PROCEDURE
1. Remove the instrument panel accessory trim plate.
2. Remove the accessory switch from the instrument panel.
3. Remove the screws from the HVAC control module.
4. Depress the control assembly retaining tabs and remove the HVAC control module from the instrument panel.
5. Disconnect the electrical connectors from the HVAC control module.
INSTALLATION PROCEDURE
1. Connect the electrical connectors to the HVAC control module.
IMPORTANT: The key should be in the off position when connecting the electrical connectors to ensure proper calibration.
2. Install the HVAC control module into the instrument panel.
3. Install the screws to the HVAC control module.
NOTE: Refer to Fastener Notice in Service Precautions.
Tighten the screws to 1.9 N.m (17 lb in).
4. Install the accessory switch to the instrument panel.
5. Install the instrument panel accessory trim plate.
6. 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.
.
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.