GM Service Manual Online
For 1990-2009 cars only

Driver or Passenger Seat Back Cushion Frame Replacement Fold Flat

The seat back frame is exposed after you remove the seat back trim cover and the pad. Refer to Front Seat Back Cushion Cover and Cushion Pad Replacement .

Driver or Passenger Seat Back Cushion Frame Replacement Non-Fold Flat

Removal Procedure

  1. Remove the seat back cover and pad. Refer to Front Seat Back Cushion Cover and Cushion Pad Replacement .
  2. If the seat is equipped with lumbar support, perform the following procedure:
  3. 2.1. Adjust the lumbar knob until the lumbar basket is in the position of least support.
    2.2. Pull back on the lumbar cable sleeve.

    Object Number: 873771  Size: SH
  4. Adjust the seat back position until the notches in the seat back frame line up with the springs.
  5. Using a suitable tool, carefully slide the springs into the notches. Ensure that the springs are completely engaged in the slots.

  6. Object Number: 876774  Size: SH
  7. Adjust the seat back forward to allow the springs to be lifted from the impact tube.

  8. Object Number: 875183  Size: SH
  9. Remove the recliner handle spring.
  10. Remove the recliner handle bolt.
  11. Remove the recliner handle.

  12. Object Number: 875184  Size: SH
  13. Remove the nuts from the outboard seat back frame.
  14. Remove the teardrop washer bolt.
  15. Remove the teardrop washer from the seat.

  16. Object Number: 876772  Size: SH
  17. Remove the nuts from the inboard seat back frame.
  18. Lift the seat back frame out from between the adjusters.

Installation Procedure


    Object Number: 888311  Size: SH
  1. Position the seat back frame between the adjusters. Ensure that the locator tabs are properly seated in both adjusters.
  2. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 876772  Size: SH
  3. Install the nuts to the inboard seat back frame.
  4. Tighten
    Tighten the nuts to 25 N·m (18 lb ft).


    Object Number: 875184  Size: SH
  5. Install the teardrop washer.
  6. Install the nuts to the outboard seat back frame.
  7. Tighten
    Tighten the nuts to 17 N·m (13 lb ft).

  8. Install the teardrop washer bolt.
  9. Tighten
    Tighten the bolt to 35 N·m (26 lb ft).


    Object Number: 875183  Size: SH
  10. Install the recliner handle.
  11. Install the recliner handle bolt.
  12. Tighten
    Tighten the bolt to 12 N·m (106 lb in).

  13. Install the recliner handle spring.

  14. Object Number: 876774  Size: SH
  15. Adjust the seat back forward until the frame springs catch on the impact tube.
  16. If the seat is equipped with lumbar support, perform the following procedure:
  17. 10.1. Pull back on the lumbar cable sleeve.
    10.2. Install the barrel end of the cable to the lumbar actuator.
    10.3. Adjust the lumbar knob to ensure that the cable is properly installed.
  18. Install the seat back cover and pad. Refer to Front Seat Back Cushion Cover and Cushion Pad Replacement .