GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2008 🢒 XLR 🢒 Body Hardware and Trim 🢒 Instrument Panel and Console Trim 🢒 HVAC Control Module Replacement

Removal Procedure
  1. Disconnect the battery. Refer to Battery Negative Cable Disconnection and Connection.

    2. Object Number: 1241547 Size: SH
  2. Remove the I/P accessory trim plate. Refer to Instrument Panel Accessory Trim Plate Replacement.
  3. Remove the HVAC control module retaining screws.
  4. Remove the HVAC control module.

Installation Procedure

    Object Number: 1241547 Size: SH
  1. Install the HVAC control module to the I/P trim plate.

    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 screws.

    3. Tighten
    Tighten the screws to 1.6 N·m (14 lb in).

  3. Connect the electrical connectors to the HVAC control module.
  4. Install the I/P accessory trim plate. Refer to Instrument Panel Accessory Trim Plate Replacement.
  5. Connect the battery. Refer to Battery Negative Cable Disconnection and Connection.

    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.