GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2008 🢒 Grand Prix 🢒 Power and Signal Distribution 🢒 Data Communications 🢒 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. Remove the I/P center compartment. Refer to Instrument Panel Center Compartment Replacement.

    3. Object Number: 1550657 Size: SH
  3. Remove the retaining screws (1) from the HVAC control module.
  4. Pull the HVAC control module out from the I/P.
  5. Disconnect the electrical connectors from the HVAC control module.
  6. Remove the HVAC control module.

Installation Procedure

    Important: The key should be in the off position when connecting the HVAC control module electrical connector to ensure proper calibration.

  1. Connect the electrical connectors to the HVAC control module.

    2. Object Number: 1550657 Size: SH
  2. Install the HVAC control module into the I/P.

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

  3. Install the retaining screws (1) to secure the HVAC control module.

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

  4. Install the I/P center compartment. Refer to Instrument Panel Center Compartment Replacement.
  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.