GM Service Manual Online
For 1990-2009 cars only

Driver or Passenger Seat Lumbar Support Actuator Replacement If equipped

Removal Procedure

  1. Remove the front seat. Refer to Seat Replacement
  2. Remove the front seatback cushion cover. Refer to Front Seat Back Cushion Cover Replacement
  3. The front seatback cushion cover, cushion and heating element does not have to be separated to replace lumbar components.


    Object Number: 246329  Size: SH
  4. Remove the lumbar adjuster rods.
  5. 3.1. Unsnap the ring from the end of the adjuster rods.
    3.2. Slide rods off of the lumbar actuator.

    Object Number: 246331  Size: SH
  6. Remove the lumbar actuator.
  7. Drill out two rivets from the lumbar actuator mounting plate to release it form the seatback frame.

Installation Procedure


    Object Number: 246329  Size: SH
  1. Install the lumbar actuator.
  2. Install two rivets to the lumbar actuator mounting plate to secure it to the seatback frame.

  3. Install the lumbar adjuster rods.
  4. Install the front seatback cushion cover. Refer to Front Seat Back Cushion Cover Replacement
  5. Install the front seat. Refer to Seat Replacement