GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2003 🢒 Park Avenue 🢒 HVAC 🢒 Heating, Ventilation and Air Conditioning 🢒 Mode Door Replacement

Removal Procedure
  1. Remove the HVAC Module. Refer to HVAC Module Assembly Replacement .
  2. Remove the mode actuator.
  3. Remove the left temperature actuator.
  4. Remove the fasteners that retain the mode actuator bracket.
  5. Remove the mode actuator bracket.
  6. Remove the upper module case screws in order to access the door.

    7. Object Number: 688097 Size: SH
  7. Open the module.

    8. Object Number: 688096 Size: SH
  8. Remove the actuator cam from the door.

    9. Object Number: 688110 Size: SH
  9. Remove the mode door.

Installation Procedure

    Object Number: 688110 Size: SH
  1. Install the mode door.
  2. Install the actuator cam to the mode door.

    3. Object Number: 688097 Size: SH
  3. Close the module case.

    4. 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.

  4. Install the module case screws.

    5. Tighten
    Tighten the screws to 1.4 N·m (12 lb in).

  5. Install the mode actuator and bracket.

    6. Tighten
    Tighten the screws to 1.4 N·m (12 lb in).

  6. Install the HVAC module. Refer to HVAC Module Assembly Replacement .