GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 303358  Size: SH
  1. Remove the screws that retain the data link connector (DLC) to the instrument panel sound insulator.
  2. Feed the DLC through the hole in the sound insulator.
  3. Remove the screws that retain the instrument panel sound insulator to the knee bolster and the cowl panel.
  4. Remove the nut that retains the instrument panel sound insulator to the accelerator pedal bracket.
  5. Remove the instrument panel sound insulator from the vehicle.

Installation Procedure


    Object Number: 303358  Size: SH
  1. Install the instrument panel sound insulator to the vehicle.
  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.

  3. Install the nut that retains the instrument panel sound insulator to the accelerator pedal bracket.
  4. Tighten
    Tighten the nut to 4 N·m (35 lb in).

  5. Install the screw that retains the instrument panel sound insulator to the cowl panel.
  6. Tighten
    Tighten the nut to 1.9 N·m (17 lb in).

  7. Install the screw that retains the instrument panel sound insulator to the knee bolster.
  8. Tighten
    Tighten the nut to 1.9 N·m (17 lb in).

  9. Feed the DLC through the hole in the instrument panel sound insulator.
  10. Install the screws that retain the DLC to the instrument panel sound insulator.
  11. Tighten
    Tighten the nut to 2.4 N·m (21 lb in).