GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 280274  Size: SH
  1. Remove the instrument cluster trim plate. Refer to Instrument Cluster Trim Panel Replacement in Instrument Panel and Gauges.
  2. Remove the retaining screw from the left edge of the HVAC control assembly.
  3. Pivot the HVAC control assembly from the instrument panel.
  4. Pull the HVAC control assembly out of the instrument panel in order to access the vacuum and the electrical connectors.

  5. Object Number: 280273  Size: SH
  6. Disconnect the following items from the HVAC control assembly:
  7. • The electrical connectors.
    • The vacuum connectors.

Installation Procedure


    Object Number: 280273  Size: SH
  1. Connect the following items to the HVAC control assembly:
  2. • The vacuum connectors.
    • The electrical connectors.

    Object Number: 280274  Size: SH
  3. Align the tab on the HVAC control assembly with the slot in the instrument panel.
  4. Pivot the HVAC control assembly into the instrument panel.
  5. 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.

  6. Install the screw in order to retain the left edge of the control assembly.
  7. Tighten
    Tighten the screw to 2  N·m (18 lb in).

  8. Install the instrument cluster trim plate. Refer to Instrument Cluster Trim Panel Replacement in Instrument Panel and Gauges.