GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Caution: The seat belt assembly and/or bracket assembly must be replaced as a unit only. Do not substitute parts for any reason, or personal injury could result.

  1. Remove the seat. Refer to Seat Replacement in Seats.
  2. Remove the seat side air bag. Refer to Driver and Passenger Seat Side Inflatable Restraint Module Replacement in SIR.
  3. Remove the head restraint. Refer to Front Seat Head Restraint Replacement in Seats.

  4. Object Number: 577961  Size: MH
  5. Remove the seat trim panels (11, 12).
  6. Remove the seat back cover and pad. Refer to Front Seat Back Cushion Cover and Cushion Pad Replacement in Seats.

  7. Object Number: 578835  Size: SH
  8. Remove the upper retractor access door.

  9. Object Number: 578851  Size: SH
  10. Remove the upper retractor retaining bolt.
  11. Feed retractor through the seat back cover and pad opening.

  12. Object Number: 578940  Size: SH
  13. Remove the lower lap belt retractor assembly nut.
  14. Remove lower lap belt retractor assembly.

Installation Procedure

  1. Route the upper retractor assembly through the seat back cover and pad opening.

  2. Object Number: 578851  Size: SH
  3. Install the shoulder belt retractor.
  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.

  5. Install the shoulder belt retractor nut.
  6. Tighten
    Tighten the shoulder belt retractor nut to 24 N·m (18 lb ft).


    Object Number: 578940  Size: SH
  7. Install the lower lap belt retractor assembly.
  8. Install the lap belt retractor nut.
  9. Tighten
    Tighten the lap belt retractor nut to 24 N·m (18 lb ft).


    Object Number: 578835  Size: SH
  10. Install the upper retractor access door.
  11. Install the seat back cover and pad. Refer to Front Seat Back Cushion Cover and Cushion Pad Replacement in Seats.
  12. Install the seat trim panels (11, 12).
  13. Install the head restraint. Refer to Front Seat Head Restraint Replacement in Seats.
  14. Install the seat side air bag. Refer to Driver and Passenger Seat Side Inflatable Restraint Module Replacement in SIR.
  15. Install the seat. Refer to Seat Replacement in Seats.