GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2005 🢒 LeSabre 🢒 Vehicle Control Systems 🢒 Vehicle DTC Information 🢒 HVAC Control Module Replacement

Removal Procedure
  1. Remove the right instrument panel accessory trim plate. Refer to Instrument Panel Accessory Trim Plate Replacement - Right Side.

    2. Object Number: 443866 Size: SH
  2. Pinch the tabs on the A/C control module and pull rearward on the HVAC control module to remove from the instrument panel.

Installation Procedure

    Object Number: 443866 Size: SH

    Important: The ignition must be in the OFF position when installing the HVAC control module to ensure proper actuator calibration.

  1. Install the HVAC control module into the instrument panel ensuring the tabs are seated into the instrument panel.
  2. Install the right instrument panel accessory trim plate. Refer to Instrument Panel Accessory Trim Plate Replacement - Right Side.

    3. 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.

  3. Start the engine and let run for one minute.
  4. Refer to Control Module References for programming and setup information.