GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Caution: Replace the passenger presence system as a complete assembly to prevent possible injury to the occupant. The bladder, the pressure sensor, the seat cushion, and the control module are assembled and calibrated as a unit. Using only some of the components in the service kit will cause the passenger presence system to operate improperly.


    Object Number: 811855  Size: SH
  1. Remove the seat cushion trim cover and pad. Refer to Seat Cushion Trim Cover and Pad Replacement .
  2. Disconnect the electrical connectors.
  3. Remove the bolts that retain the electronic control unit (ECU) (1) from the bottom of the passenger seat cushion frame.
  4. Remove the pressure switch (2) from the bottom of the passenger seat cushion frame.

  5. Object Number: 811858  Size: SH
  6. Remove the push-in retainers (1) that hold the bladder to the seat cushion frame.
  7. Remove the inflatable restraint passenger presence system from the seat.

Installation Procedures


    Object Number: 811858  Size: SH
  1. Install the inflatable restraint passenger presence system to the seat.
  2. Install the push-in retainers (1) that hold the bladder to the seat cushion frame.

  3. Object Number: 811855  Size: SH
  4. Install the pressure sensor (2) to the bottom of the passenger seat cushion frame.
  5. Notice: Refer to Fastener Notice in the Preface section.

  6. Install the bolts that retain the ECU (1) to the bottom the passenger seat cushion frame.
  7. Tighten
    Tighten the bolts to 2 N·m (18 lb in).

  8. Connect the electrical connectors.
  9. Install the seat cushion trim cover and pad. Refer to Seat Cushion Trim Cover and Pad Replacement .
  10. Re-zero the inflatable restraint passenger presence system. Refer to Control Module References for programming and setup information.