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Home >> Buick >> 2008 >> LaCrosse V6-3.8L >> Repair and Diagnosis >> Heating and Air Conditioning >> Control Assembly >> Service and Repair
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Control Assembly: Service and Repair



Heater and Air Conditioning Control Replacement

Removal Procedure

1. Remove the instrument panel lower trim plate. Refer to Instrument Panel Lower Trim Plate Replacement (Service and Repair).




2. Remove the HVAC control assembly mounting screws (1).





Important: Retaining clips hold the HVAC control assembly in place.


3. Pull the HVAC control assembly rearward from the instrument panel.
4. Disconnect the electrical connectors form the HVAC control assembly.
5. Remove the HVAC control assembly.

Installation Procedure





Important: 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 assembly.




2. Install the HVAC control assembly.

Notice: Refer to Fastener Notice (Fastener Notice).

3. Install the HVAC control assembly mounting screws.

Tighten the screws to 2 N.m (18 lb in).

4. Install the instrument panel lower trim plate. Refer to Instrument Panel Lower Trim Plate Replacement (Service and Repair).

Important: Do not adjust any controls on the HVAC control assembly while the HVAC control assembly is calibrating. If interrupted improper HVAC performance will result.


5. Start the engine and run for 1 minute.

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