GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2009 🢒 LaCrosse 🢒 Diagnostic Navigation 🢒 Vehicle Diagnostic Information 🢒 Seat Belt Buckle Pretensioner Replacement

Removal Procedure

    Warning: Refer to SIR Warning in the Preface section.

  1. Disable the SIR system. Refer to SIR Disabling and Enabling.

    2. Warning: When carrying an undeployed inflatable restraint seat belt pretensioner:

       • Do not carry the seat belt pretensioner by the wires or connector.
       • Carry the seat belt pretensioner by the piston tube, keeping hands and fingers away from the cable.
       • Make sure the open end of the seat belt pretensioner piston tube points away from you and other people.
       • Do not cover the seat belt pretensioner piston tube opening with your hand.
    Failure to observe these guidelines may result in personal injury.

  2. For pretensioner handling and scrapping refer to Pretensioner Handling and Scrapping.
  3. Remove the seat bolts. Refer to Front Seat Replacement - Bucket.

    4. Object Number: 858956 Size: SH
  4. Tip the seat forward, remove the position assurance pin (2), and disconnect the pretensioner electric connector (1) from the body harness.
  5. Disconnect the seat harness connector from the body harness.
  6. Disconnect the pretensioner electrical connector from the seat electrical harness.
  7. If equipped, disconnect the seat belt reminder cable.

    8. Object Number: 858954 Size: SH
  8. Remove the nut from the seat belt pretensioner.
  9. Remove the wiring harness from the seat belt pretensioner through the seat bottom frame.
  10. Remove the pretensioner from the seat.

Installation Procedure
  1. Position the pretensioner to the seat bottom frame.
  2. Position the wiring harness to the seat belt pretensioner through the seat bottom frame.
  3. Connect the pretensioner electrical connector to the seat electrical harness.
  4. If equipped, connect the seat belt reminder cable.

    5. Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 858954 Size: SH
  5. Install the nut to the seat belt pretensioner.

    6. Tighten
    Tighten the nut to 35 N·m (26 lb ft).


    Object Number: 858956 Size: SH
  6. Install the pretensioner electric connector (1) and position assurance pin (2) to the body harness.
  7. Connect the seat harness connector to the body harness.
  8. Install the driver seat belts. Refer to Front Seat Replacement - Bucket.
  9. Enable the SIR system. Refer to SIR Disabling and Enabling.
  10. If the pretensioner is to be scrapped, deploy the pretensioner. Refer to Pretensioner Handling and Scrapping.
  11. If the pretensioner is to be returned undeployed to the manufacturer for warranty, refer to Pretensioner Handling and Scrapping.