GM Service Manual Online
For 1990-2009 cars only

Lumbar Bladder Replacement Non-Removable Seat

Removal Procedure


    Object Number: 276304  Size: SH
  1. Remove the seat from the vehicle. Refer to Split Bench Seat Replacement or Bench Seat Replacement .
  2. Tilt the seat back forward and place the seat assembly upside-down.
  3. Remove the seat back panel lower retainer from the seat frame.
  4. Remove the rubber hose between the bladder and the pump.
  5. Place a hand down inside the seat back and disconnect the bladder mounting bars from the round hooks on the frame.

  6. Slide the bladder downward and off the mounting bars.
  7. Remove the bladder from the seat back.

Installation Procedure


    Object Number: 276304  Size: SH
  1. Position the bladder inside the seat back on the mounting bars and slide upward.
  2. Install the rubber hose between the bladder and the pump.
  3. Install the bladder mounting bars to the round hooks on the frame.
  4. Install the seat back panel lower retainer to the seat frame.
  5. Install the seat assembly into the vehicle. Refer to Split Bench Seat Replacement or Bench Seat Replacement .

Lumbar Bladder Replacement Removable Seat

Removal Procedure

  1. Slide the seat forward.
  2. Remove the seat trim close-out strip from the seat back trim panel.
  3. Remove the lower screws from the seat back trim panel.
  4. Push down and pull out at the top of the seat back trim panel and remove.

  5. Remove the left and the right seat trim from the J-hooks from the seat frame.

  6. Object Number: 276304  Size: SH
  7. Remove the rubber hose from the bladder assembly.
  8. Remove the bladder mounting bars (1) from around the hooks on the frame.
  9. Slide the bladder upward, off the mounting bars.
  10. Remove the bladder from the seat back.

Installation Procedure


    Object Number: 276304  Size: SH
  1. Install the bladder to the seat back by sliding the bladder over the bladder mounting bars (1).
  2. Install the rubber hose to the bladder.
  3. Install the bladder mounting bars around the hooks on the frame.
  4. Install the left and the right seat trim J-hooks onto the seat frame.
  5. Install the lower seat back panel bracket to the lower seat back.
  6. Push down and in at the top of the seat back panel to secure the lower seat back.

  7. Install the seat back panel screws.
  8. Install the seat trim close-out strip to the seat back trim panel.
  9. Slide the seat back into the original position.

Lumbar Bladder Replacement Non-Removable Seat Back Panel

Removal Procedure

  1. Remove the seat from the vehicle. Refer to Bench Seat Replacement .
  2. Remove the seat trim close-out strip at the bottom of the seat back.

  3. Object Number: 276304  Size: SH
  4. Remove the rubber hose from the bladder assembly.
  5. Remove the bladder mounting bars (1) from around the hooks on the frame.
  6. Slide the bladder upwards, off the mounting bars.
  7. Remove the bladder from the seat back.

Installation Procedure


    Object Number: 276304  Size: SH
  1. Install the bladder to the seat back by sliding over the bladder mounting bars (1).
  2. Install the rubber hose to the bladder.
  3. Install the bladder mounting bars around the hooks on the frame.
  4. Install the seat trim close-out strip at the bottom of the seat back.
  5. Install the seat. Refer to Bench Seat Replacement .

Lumbar Bladder Replacement Split Bench

Removal Procedure

  1. Remove the seat from the vehicle. Refer to Split Bench Seat Replacement or Bench Seat Replacement .
  2. Tilt the seat back forward and place the seat assembly upside-down.

  3. Remove the seat back panel lower retainer from the seat frame.

  4. Object Number: 276304  Size: SH
  5. Remove the rubber hose between the bladder and the pump.
  6. Place a hand down inside the seat back and disconnect the bladder mounting bars (1) from the round hooks on the frame, one on each side.

  7. Slide the bladder downwards and off the mounting bars.
  8. Remove the bladder from the seat back.

Installation Procedure


    Object Number: 276304  Size: SH
  1. Position the bladder inside the seat back on the mounting bars (1).
  2. Slide the bladder upward.
  3. Install the rubber hose between the bladder and the pump.
  4. Install the bladder mounting bars to the round hooks on the frame, one on each side.
  5. Install the seat back panel lower retainer to the seat frame.
  6. Install the seat assembly in the vehicle. Refer to Split Bench Seat Replacement or Bench Seat Replacement .

Lumbar Bladder Replacement Bench Seat

Removal Procedure

  1. Remove the seat from the vehicle. Refer to Split Bench Seat Replacement or Bench Seat Replacement .
  2. Remove the seat trim close-out strip at the bottom of the seat back.

  3. Object Number: 276304  Size: SH
  4. Remove the rubber hose from the bladder assembly.
  5. Remove the bladder mounting bars (1) from around the hooks on the frame.
  6. Slide the bladder upwards, off the mounting bars.
  7. Remove the bladder from the seat back.

Installation Procedure


    Object Number: 276304  Size: SH
  1. Install the bladder to the seat back by sliding over the bladder mounting bars (1).
  2. Install the rubber hose to the bladder.
  3. Install the bladder mounting bars around the hooks on the frame.
  4. Install the seat trim close-out strip at the bottom of the seat back.
  5. Install the seat. Refer to Split Bench Seat Replacement or Bench Seat Replacement .