GM Service Manual Online
For 1990-2009 cars only

Front Seat Lumbar Support Replacement Buick

Removal Procedure

  1. Remove the seat. Refer to Seat Replacement .
  2. Remove the seat back. Refer to Front Seat Back Replacement .
  3. Remove the seat back cover and the pad. Refer to Front Seat Back Cushion Cover and Cushion Pad Replacement .

  4. Object Number: 287842  Size: SH
  5. Remove the seat back frame (4) with the lumbar motor (3) and the strap (5) attached.

Installation Procedure


    Object Number: 287842  Size: SH
  1. Install the seat back pad (1) to the frame (4).
  2. Install the seat back cover. Refer to Front Seat Back Cushion Cover and Cushion Pad Replacement .
  3. Connect the electrical connection.
  4. Install the seat back. Refer to Front Seat Back Replacement .
  5. Install the seat. Refer to Seat Replacement .

Front Seat Lumbar Support Replacement Oldsmobile

Removal Procedure

    Important: The lumbar pump motor is located under the driver's seat. The hose connections are numbered and color-coded in the following manner:

       • Driver's upper bladder - green
       • Driver's lower bladder - yellow
       • Passenger's upper bladder - blue
       • Passenger's lower bladder - gray
    For electrical diagnosis, refer to Lumbar Support System Check .

  1. Remove the seat. Refer to Seat Replacement .

  2. Object Number: 287835  Size: SH
  3. Remove the seat back. Refer to Front Seat Back Replacement .
  4. Remove the seat back cover and the cushion. Refer to Front Seat Back Cushion Cover and Cushion Pad Replacement .
  5. Remove the 2 hoses (6).
  6. Remove the bladder (7).

Installation Procedure


    Object Number: 287835  Size: SH
  1. Install the bladder (7).
  2. Install the 2 hoses (6).
  3. Install the seat back cover and the cushion. Refer to Front Seat Back Cushion Cover and Cushion Pad Replacement .
  4. Install the seat back. Refer to Front Seat Back Replacement .
  5. Install the seat. Refer to Seat Replacement .