GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2003 🢒 Avalanche - 4WD 🢒 Body and Accessories 🢒 Wiring Systems 🢒 Auxiliary Heater and Air Conditioning Control Module Replacement

Removal Procedure

    Object Number: 899651 Size: SH
  1. Remove the right rear quarter trim panel. Refer to Rear Quarter Trim Panel Replacement - Right Side in Interior Trim.
  2. Disconnect the electrical connectors (3,4) from the auxiliary HVAC control module (1).
  3. Remove the screws from the auxiliary HVAC control module (1).
  4. Remove the auxiliary HVAC control module (1) from the auxiliary HVAC module (2).

Installation Procedure

    Object Number: 899651 Size: SH
  1. Install the auxiliary HVAC control module (1) to the auxiliary HVAC module (2).

    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 screws to the auxiliary HVAC control module (1).

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

  3. Connect the electrical connectors (3,4) to the auxiliary HVAC control module (1).
  4. Install the right rear quarter trim panel. Refer to Rear Quarter Trim Panel Replacement - Right Side in Interior Trim.