GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 477520  Size: SH
  1. Remove the instrument panel assembly. Refer to Instrument Panel Assembly Replacement .
  2. Remove the following components from the IP assembly:
  3. 2.1. The screw (2)
    2.2. The air distribution center duct (1)

    Object Number: 477521  Size: SH
  4. Remove the following components from the IP assembly:
  5. 3.1. The 4 screws (1)
    3.2. The windshield defroster outlet duct (2)
    3.3. The heater duct

    Object Number: 477526  Size: SH
  6. Remove the screw (3) from the left side of the rear of the IP assembly (1) which secures the IP wiring harness (2).

  7. Object Number: 477525  Size: SH
  8. Remove the 2 screws (1) from the center of the rear of the IP assembly (3) which secure the IP wiring harness (2).

  9. Object Number: 477526  Size: SH
  10. Remove the screw (3) from the right side of the rear of the IP assembly (1) which secures the IP wiring harness (2).

  11. Object Number: 477522  Size: SH
  12. Release the wiring harness retainers and remove the IP wiring harness (2) from the IP reinforcement (1).
  13. Remove the following components from the IP assembly:
  14. 8.1. The 10 screws
    8.2. The 4 bolts
    8.3. The IP reinforcement

Installation Procedure


    Object Number: 477522  Size: SH

    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.

  1. Install the IP reinforcement to the IP assembly. Secure the reinforcement with the following:
  2. 1.1. The 10 screws
    1.2. The 4 bolts

    Tighten
    Tighten the IP reinforcement bolts to 23 N·m (17 lb ft).

  3. Install the IP wiring harness (2) to the IP reinforcement (1). Secure the harness with the plastic retainers.

  4. Object Number: 477526  Size: SH
  5. Install the screw (3) to the left side of the rear of the IP assembly (1) which secures the IP wiring harness (2).

  6. Object Number: 477525  Size: SH
  7. Install the 2 screws (1) to the center of the rear of the instrument panel (3) which secure the IP wiring harness (2).

  8. Object Number: 477526  Size: SH
  9. Install the screw (3) to the right side of the rear of the IP assembly (1) which secures the IP wiring harness (2).

  10. Object Number: 477521  Size: SH
  11. Install the heater duct to the IP assembly
  12. Install the windshield defroster outlet duct (2) to the IP assembly Secure the outlet duct with the 4 screws (1).

  13. Object Number: 477520  Size: SH
  14. Install the air distribution center duct (1) to the IP assembly. Secure the center duct with the screw (2).
  15. Install the IP assembly. Refer to Instrument Panel Assembly Replacement .