GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 817977  Size: SH
  1. If one side of the seat adjuster is not working, perform the following procedure:
  2. 1.1. The horizontal drive motor (1) and drive cables (4) are located at the front of the seat. Check to see if both cables are straight. If a cable is bent an end will be pulled out of the drive motor or drive screw. Straighten the cable. The seat switch may have to he toggled back and forth to get the cable ends to properly seat.
    1.2. Run the seat forward until the seat removal bolts are accessible.
    1.3. Once the seat is removed the cables must be removed and examined to assure that no damage has occurred.
    1.4. Also, the two sides of the seat adjuster will now be out of sync and must be readjusted or the adjuster may be noisy and the motor may overheat and fail.

    Use the following steps for adjustment.

           - Tip the seat rearward.
           - Reconnect the adjuster to the power switch.
           - Run the seat adjuster rearward until the drive bracket (3) and the anchor bracket (2) are together on one side of the adjuster.
           - Disconnect the drive cable on that side and run the opposite side rearward until its brackets touch.
           - Re-attach the cable  (4) to the motor and make sure they are straight between the motor (1) and the drive brackets (3).
  3. If the power seat motor is not operable, and the bolts that secure the adjuster to the floor pan are not accessible, perform the following procedure:

  4. Object Number: 816215  Size: SH
    • From the front of the seat, disconnect both drive cables at the horizontal drive motor (2), which is located at the front of the seat adjuster.
    • Attach a drill motor to a drive cable (1).
    • Alternately run both sides of the adjuster forward until the seat removal bolts are accessible.
  5. Remove the front seat. Refer to Front Seat Replacement - Bucket .
  6. Remove the seat trim panel. Refer to Front Seat Trim Panel Replacement .

  7. Object Number: 802619  Size: SH
  8. Remove the seat belt bracket (2) on the door side of the seat. The new adjuster does not have this part.
  9. Remove the seat belt buckle. Refer to Seat Belt Buckle Replacement - Left Front in Seat Belts.

  10. Object Number: 800742  Size: SH
  11. Remove the electrical harness from the power seat motor harness.

  12. Object Number: 800745  Size: SH
  13. Remove the electrical harness clip and disconnect the harness retainer from the adjuster bracket.
  14. Recline the seat back to the full reclined position.
  15. Remove the trim cover J-hooks from the seat front and from the seat sides.
  16. Fold back the seat trim and the pad to access the adjuster bolts.

  17. Object Number: 800748  Size: SH
  18. Remove the 4 adjuster bolts.

  19. Object Number: 800757  Size: SH
  20. Remove the seat adjuster.

Installation Procedure


    Object Number: 800752  Size: SH
  1. Position the adjuster on the seat frame.
  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.

  3. Install the adjuster bolts.
  4. Tighten
    Tighten the bolts to 24 N·m (18 lb ft).

  5. Return the seat pad and the trim to the installed position.
  6. Install the trim cover J-hooks.

  7. Object Number: 800745  Size: SH
  8. Install the electrical harness clip and the retainer on the adjuster bracket.

  9. Object Number: 800742  Size: SH
  10. Connect the electrical harness to the seat motor harness.
  11. Install the seat belt buckle. Refer to Seat Belt Buckle Replacement - Left Front in Seat Belts.

  12. Object Number: 802619  Size: SH
  13. Install the seat belt bracket (2).
  14. Install the seat trim panel. Refer to Front Seat Trim Panel Replacement .
  15. Important: Inspect the drive cables. Make sure they are straight between the motors and the adjuster.

  16. Install the front seat. Refer to Front Seat Replacement - Bucket .