GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2004 🢒 Rainier 🢒 HVAC 🢒 Heating, Ventilation and Air Conditioning 🢒 Auxiliary Evaporator Block Replacement

Removal Procedure
  1. Remove the HVAC module-auxiliary. Refer to Auxiliary HVAC Module Replacement .
  2. Remove the TORX studs from the evaporator block-auxiliary.

    3. Object Number: 816374 Size: SH
  3. Remove the evaporator block-auxiliary (1) from the HVAC module-auxiliary.

Installation Procedure

    Object Number: 816374 Size: SH
  1. Install the evaporator block-auxiliary (1) to the HVAC module-auxiliary.

    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 TORX studs to the evaporator block-auxiliary.

    3. Tighten
    Tighten the studs to 14 N·m (124 lb in).

  3. Install the HVAC module-auxiliary. Refer to Auxiliary HVAC Module Replacement .