GM Service Manual Online
For 1990-2009 cars only

Front Seat Adjuster Replacement Two-Way Manual

Removal Procedure

  1. Remove the front seat from the vehicle. Refer to Front Seat Replacement - Bucket .
  2. Remove the front seat trim panel. Refer to Front Seat Adjuster Track Finish Cover Replacement .

  3. Object Number: 802619  Size: SH

    Important: The bracket is NOT included with a seat adjuster. Reinstall the existing bracket.

  4. Remove the seat belt bracket (2) on the door side of the seat.
  5. Remove the seat belt pretensioner. Refer to Seat Belt Buckle Pretensioner Replacement .

  6. Object Number: 865020  Size: SH
  7. Remove the seat trim and the pad. Refer to Front Seat Cushion Replacement .
  8. Remove the 4 seat frame bolts.
  9. Remove the seat frame.

  10. Object Number: 864992  Size: SH
  11. Remove the 2 adjuster cover plates.

  12. Object Number: 865006  Size: SH
  13. Remove the seat back frame bolts.
  14. Remove the seat back from the adjuster.

  15. Object Number: 310454  Size: SH
  16. Remove the adjuster from the seat cushion frame.
  17. Remove the adjuster crosswire and assist springs.
  18. Remove the crossbrace bolts in order to separate the left and the right adjusters.

Installation Procedure


    Object Number: 310454  Size: SH
  1. Install a crossbrace to the left and the right adjusters.
  2. Ensure that the tab bending downward at the center of the crossbrace faces the rear of the adjusters.
  3. 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. Secure the crossbrace with two bolts.
  5. Tighten
    Tighten the crossbrace bolts to 6 N·m (53 lb in).

  6. Install the crosswire and assist springs.
  7. Important: Install the right and left seat adjuster sliding mechanism in the same position that the mechanism had when you attached the adjuster-to-seat bottom frame.

    Install the adjuster assembly to the floorpan attachments before you attach the adjusters to the seat. Use the floorpan as a guide during assembly in order to ensure correct adjuster alignment. The floorpan will act as an assembly fixture.

  8. Install the adjuster assembly to the floorpan.
  9. Install the bolts which secure the seat adjuster to the floorpan.
  10. Tighten
    Tighten the bolts to 42 N·m (31 lb ft).


    Object Number: 864992  Size: SH
  11. Install the 2 adjuster cover plates.

  12. Object Number: 865020  Size: SH
  13. Position the seat frame on the adjuster.
  14. Install the 4 bolts which secure the seat frame to the adjuster.
  15. Tighten
    Tighten the bolts to 24 N·m (18 lb ft).

  16. Install the seat cushion cover and pad. Refer to Front Seat Cushion Replacement .

  17. Object Number: 802619  Size: SH
  18. Install the seat belt bracket (2).
  19. Install the seat belt pretensioner. Refer to Seat Belt Buckle Pretensioner Replacement .
  20. Install the front seat trim panel. Refer to Front Seat Adjuster Track Finish Cover Replacement .
  21. Install the front seat in the vehicle. Refer to Front Seat Replacement - Bucket .