GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 1999 🢒 Grand Prix 🢒 Restraints 🢒 SIR 🢒 Knee Bolster Replacement

Removal Procedure
  1. Remove the left instrument panel (IP) insulator. Refer to Instrument Panel Insulator Replacement .
  2. Remove the steering column opening filler. Refer to Steering Column Opening Filler Replacement .

    3. Object Number: 311721 Size: SH
  3. Remove the retaining bolts from the knee bolster at the IP.

    4. Object Number: 182689 Size: SH
  4. Remove the retaining bolts from the knee bolster at the steering column support.
  5. Remove the knee bolster from the IP.

Installation Procedure

    Object Number: 182689 Size: SH
  1. Install the knee bolster to the instrument panel (IP).

    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 bolts to the knee bolster at the steering column support.

    3. Tighten
    Tighten the knee bolster bolts at the steering column support to 10  N·m (89 lb in).


    Object Number: 311721 Size: SH
  3. Install the bolts to the knee bolster at the IP.

    4. Tighten
    Tighten the knee bolster bolts at IP to 2  N·m (18 lb in).

  4. Install the steering column opening filler. Refer to Steering Column Opening Filler Replacement .
  5. Install the left IP insulator. Refer to Instrument Panel Insulator Replacement .