Avalanche 1500 2WD V8-5.3L VIN Z Flex Fuel (2005)
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.
