GM Service Manual Online
For 1990-2009 cars only

Front Seat Adjuster Replacement Driver Seat - SL, SL1, SC1, SW1

Removal Procedure

Important: LHD shown, RHD similar


    Object Number: 868126  Size: SH
  1. Remove the seat from the vehicle. Refer to Front Seat Replacement - Bucket .
  2. Remove the recliner handle.
  3. Remove the seat adjuster side cover.

  4. Object Number: 868524  Size: SH
  5. Remove the seat belt harness.

  6. Object Number: 868517  Size: SH
  7. Remove the seat belt buckle.

  8. Object Number: 863874  Size: SH
  9. Remove the recliner lever and nylon spacer.

  10. Object Number: 863412  Size: SH
  11. On the coupe passenger seat, remove the clip attaching the E-Z entry cable to the inboard recliner, and separate the cable from the recliner.

  12. Object Number: 859205  Size: SH
  13. Disengage the seat cushion cover rear J-strip. Refer to the following:
  14. • Seat Cover (1)
    • Cushion Frame (2)
    • Foam Pad (3)
    • Cross Tube (4)
    • Seat Cover J-Strip (5)

    Object Number: 866897  Size: SH
  15. Loosen the adjuster seat bolts to assist in removal of the seatback.

  16. Object Number: 866888  Size: SH
  17. Remove the recliner bolts from the seat back assembly with the recliner mechanisms and the cross tube attached to the seat back.

  18. Object Number: 866900  Size: SH
  19. Disconnect the seat adjuster cross wire.

  20. Object Number: 886553  Size: SH
  21. Remove the seat adjusters from the seat cushion assembly.

Installation Procedure

Important: LHD shown, RHD similar.

  1. If a new seat adjusters is to be installed, transfer the adjuster return spring from the old adjuster to the new adjuster.
  2. On the coupe, if a new seat adjusters is to be installed, transfer the E-Z entry cable to the new inboard seat adjuster.
  3. Install the new seat adjusters to the cushion assembly using four adjuster bolts. Do not tighten at this time.

  4. Object Number: 866900  Size: SH
  5. Connect the seat adjuster cross wire.

  6. Object Number: 863314  Size: SH
  7. Install the seat back assembly, with recliners and cross tube attached, to the seat adjusters.
  8. Notice: Refer to Fastener Notice in the Preface section.

  9. Install the recliner with the seat adjuster bolts.
  10. Tighten
    Tighten the front seatback recliner bolts to 27 N·m (20 lb ft).

  11. Wrap the seat cushion cover rear flap to the cover up recliner cross tube and engage the seat cushion cover rear J-strip to the seat cushion frame.

  12. Object Number: 866897  Size: SH
  13. Tighten the seat adjuster bolts.
  14. Tighten
    Tighten the front seat adjuster bolts to 27 N·m (20 lb ft).


    Object Number: 863409  Size: SH
  15. On the coupe passenger seat, attach the E-Z entry cable to the inboard recliner and install the cable retaining clip.

  16. Object Number: 863874  Size: SH

    Caution: Apply Loctite 242® Threadlocker, or equivalent, on recliner lever fasteners before installing.

  17. Install the recliner lever and nylon spacer.
  18. Tighten
    Tighten the recliner lever fastener to 3 N·m (27 lb in).

    Caution: Apply Loctite 242® Threadlocker US P/N 12345382 (Canadian P/N 10953489), or equivalent, on all restraint bolts/nuts before installation. Failure to use such threadlocker correctly may result in personal injury.

  19. Apply Loctite 242® Threadlocker (or equivalent) to the seat belt buckle fastener. Position the side seat mount buckle unit 25 degrees forward from vertical to the side of the seat and install the bolt.
  20. Tighten
    Tighten the seat belt buckle seat adjuster bolt to 75 N·m (55 lb ft).


    Object Number: 868524  Size: SH
  21. On the drivers side, route the seat belt buckle wire to the seat adjuster and secure the wire to the adjuster with the seat belt wire attaching clips.

  22. Object Number: 868124  Size: SH
  23. Install the seat adjuster side cover.
  24. Tighten
    Tighten the seat side cover fasteners to 2.5 N·m (22 lb in).

  25. Install the recliner handle.
  26. Tighten
    Tighten the recliner handle fastener to 3 N·m (27 lb in).

  27. Install the seat into the vehicle. Refer to Front Seat Replacement - Bucket .

Front Seat Adjuster Replacement Driver Seat - SL2, SC2, SW2

Removal Procedure

Important: LHD shown, RHD similar


    Object Number: 866873  Size: SH
  1. Remove the seat from the vehicle. Refer to Front Seat Replacement - Bucket .
  2. Rotate the seat riser knob to the full up position.

  3. Object Number: 868126  Size: SH
  4. Remove the recliner handle.
  5. Remove the seat riser knob.
  6. Remove the seat adjuster side cover.

  7. Object Number: 868524  Size: SH
  8. Remove the seat belt buckle.

  9. Object Number: 863874  Size: SH
  10. Remove the recliner lever and nylon spacer.

  11. Object Number: 869220  Size: SH
  12. Remove the lumbar knob retaining clip.
  13. Remove the lumbar knob by pulling.
  14. Remove the lumbar actuator fasteners.
  15. Thread the lumbar cable back above the riser bar to the side of the seat back.

  16. Object Number: 869222  Size: SH
  17. Thread the lumbar cable back above the riser bar to the side of the seat back.

  18. Object Number: 859205  Size: SH
  19. Install the riser knob without the screw, lower the seat cushion, and remove the riser knob.
  20. Release the cushion cover rear J-strip from the seat cushion frame. Refer to the following:
  21. • Seat Cover (1)
    • Cushion Frame (2)
    • Foam Pad (3)
    • Cross Tube (4)
    • Seat Cover J-Strip (5)

    Object Number: 866888  Size: SH
  22. Remove the recliner bolts, the seat back assembly with recliner mechanism, and the cross tube attached to the seat back.

  23. Object Number: 863315  Size: SH
  24. Install the riser knob without the screw, raise the seat cushion and remove the riser knob.
  25. Remove the seat adjuster assembly from the seat cushion assembly by removing the four bolts at the sides of the seat cushion.

Installation Procedure

Important: LHD shown, RHD similar.

    Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 866888  Size: SH
  1. Install the seat adjuster assembly to the cushion assembly. Install the seat adjuster fasteners.
  2. Tighten
    Tighten the front seat adjuster seat bolts to 27 N·m (20 lb ft).

  3. Install the seat back assembly, with the recliners and cross tube attached, to the seat adjusters.
  4. Install the recliner to the seat adjuster bolts and install the riser knob without the screw. Lower the seat cushion, and install the riser knob.
  5. Tighten
    Tighten the front seatback recliner bolts to 27 N·m (20 lb ft).


    Object Number: 869222  Size: SH
  6. Thread the lumbar cable between the riser bar and the seat cushion bottom towards the lumbar actuator plate.
  7. Align the lumbar actuator cable assembly guide with the slot in the actuator plate.

  8. Object Number: 869220  Size: SH
  9. Install the lumbar actuator fasteners.
  10. Tighten
    Tighten the lumbar actuator fasteners to 3 N·m (27 lb in).

  11. Align the grooves on the lumbar knob with the grooves on the lumbar actuator cable assembly and push to install.
  12. Install the lumbar knob retaining clip.

  13. Object Number: 859205  Size: SH
  14. Wrap the seat cushion cover rear flap to cover up the recliner cross tube, and engage the seat cushion cover rear J-strip to the seat cushion frame. Refer to the following:
  15. • Seat Cover (1)
    • Cushion Frame (2)
    • Foam Pad (3)
    • Cross Tube (4)
    • Seat Cover J-Strip (5)

    Object Number: 863874  Size: SH

    Caution: Apply Loctite 242® Threadlocker, or equivalent, on recliner lever fasteners before installing.

  16. Install the recliner lever and nylon spacer.
  17. Tighten
    Tighten the recliner lever fastener to 3 N·m (27 lb in).


    Object Number: 868524  Size: SH

    Caution: Apply Loctite 242® Threadlocker US P/N 12345382 (Canadian P/N 10953489), or equivalent, on all restraint bolts/nuts before installation. Failure to use such threadlocker correctly may result in personal injury.

  18. Apply Loctite 242® Threadlocker (or equivalent) to the seat belt buckle fastener. Position the seat side mount buckle unit 25 degrees forward from vertical to the side of the seat and install the bolt.
  19. Tighten
    Tighten the seat belt buckle seat adjuster bolt to 75 N·m (55 lb ft).

  20. On the drivers side, route the seat belt buckle wire to the seat adjuster and secure the wire to the adjuster with the seat belt wire attaching clips.

  21. Object Number: 868126  Size: SH
  22. Install the seat adjuster side cover.
  23. Tighten
    Tighten the seat side cover fasteners to 2.5 N·m (22 lb in).

  24. Install the recliner handle.
  25. Tighten
    Tighten the recliner handle fastener to 3 N·m (27 lb in).

  26. Install the seat riser knob.
  27. Tighten
    Tighten the seat riser knob fastener to 2.5 N·m (22 lb in).

  28. Install the seat into the vehicle. Refer to Front Seat Replacement - Bucket .