GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Remove the HVAC module. Refer to HVAC Module Assembly Replacement .
  2. Remove the air temperature actuator.
  3. Remove the air inlet housing retaining screws.
  4. Remove the air inlet housing.
  5. Remove the HVAC module upper mounting screws.

  6. Object Number: 295357  Size: SH
  7. Release the retaining tab (1) securing the HVAC module halves.
  8. Separate the upper and lower module halves.

  9. Object Number: 296249  Size: SH
  10. Remove the HVAC module seal (2).

  11. Object Number: 395303  Size: SH
  12. Remove the air temperature door.

Installation Procedure


    Object Number: 395303  Size: SH
  1. Install the air temperature door.

  2. Object Number: 296253  Size: SH
  3. Install the new case seal to the HVAC module case.
  4. Wet the upper evaporator core seal with water (2).
  5. Important: Inspect the condition of the retaining tab on the upper module case prior to installing the lower module case. If the retaining tab is broken or damaged, install an external retaining clip (P/N 52458793, or equivalent).


    Object Number: 295357  Size: SH
  6. Align and install the upper module case to the lower module case.
  7. Align and secure the retaining tab (1).

    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.

  8. Install the HVAC module upper mounting screws.
  9. Tighten
    Tighten the HVAC module upper mounting screws to 1.6 N·m (14 lb in).

  10. Install the air inlet housing.
  11. Install the air inlet housing retaining screws.
  12. Tighten
    Tighten the air inlet housing retaining screws to 1.6 N·m (14 lb in).

  13. Install the air temperature actuator.
  14. Install the HVAC module. Refer to HVAC Module Assembly Replacement .