GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2007 🢒 Corvette 🢒 Diagnostic Navigation 🢒 Vehicle Diagnostic Information 🢒 HVAC Control Module Replacement

Removal Procedure
  1. Remove the instrument panel (I/P) accessory trim plate. Refer to Instrument Panel Accessory Trim Plate Replacement.

    2. Object Number: 1488652 Size: SH
  2. Remove the HVAC control module retaining screws.
  3. Remove the HVAC control module.

    4. Object Number: 1488655 Size: SH
  4. Disconnect the HVAC control module electrical connections.

Installation Procedure

    Object Number: 1488655 Size: SH
  1. Connect the HVAC control module electrical connections.

    2. Object Number: 1488652 Size: SH
  2. Install the HVAC control module to the I/P trim plate.

    3. Notice: Refer to Fastener Notice in the Preface section.

  3. Install the HVAC control module retaining screws.

    4. Tighten
    Tighten the screws to 1.9 N·m (17 lb in).

  4. Connect the electrical connectors to the HVAC control module.
  5. Install the I/P accessory trim plate. Refer to Instrument Panel Accessory Trim Plate Replacement .

    6. 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.

  6. Start and allow the engine to run for at least one minute.
  7. Refer to Control Module References for programming and setup information.