GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2003 🢒 Seville 🢒 Preface 🢒 Cautions and Notices 🢒 HVAC Control Module Replacement

Removal Procedure

    Object Number: 287815 Size: SH
  1. Remove the instrument panel center trim plate. Refer to Instrument Panel Center Trim Panel Replacement in Instrument Panel, Gages and Console.
  2. Remove the console trim plate. Refer to Console Trim Plate Replacement in Instrument Panel, Gages and Console.
  3. Remove the HVAC control module bracket fasteners.
  4. Disconnect the electrical connectors from the HVAC control module and the radio.

    5. Object Number: 287812 Size: SH
  5. Remove the HVAC control module and the radio.

    6. Object Number: 288103 Size: SH
  6. Remove the HVAC control module retaining nuts.
  7. Remove the HVAC control module from the bracket.

Installation Procedure

    Object Number: 288103 Size: SH
  1. Install the HVAC control module to the bracket.

    2. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  2. Install the HVAC control module retaining nuts.

    3. Tighten
    Tighten the nuts to 10 N·m (88 lb in).


    Object Number: 287812 Size: SH

    Important: The ignition must be in the OFF position when connecting the electrical connectors to ensure proper actuator calibration.

  3. Connect the electrical connectors to the HVAC control module and the radio.
  4. Install the HVAC control module and radio to the vehicle.

    5. Object Number: 287815 Size: SH
  5. Install the HVAC control module bracket fasteners.
  6. Install the console trim plate. Refer to Console Trim Plate Replacement in Instrument Panel, Gages and Console.
  7. Install the instrument panel center trim panel. Refer to Instrument Panel Center Trim Panel Replacement in Instrument Panel, Gages and Console.

    8. 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.

  8. Start the engine and let run for one minute.