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Pretensioner Handling and Scrapping: Procedure

WARNING: This page is about a different car, the 2008 Buick LaCrosse and 2008 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Proper Pretensioner Carrying
    GM483842Courtesy of GENERAL MOTORS CORP.
    CAUTION: When you are deploying a pretensioner for disposal, perform the deployment procedures in the order listed. Failure to follow the procedures in the order listed may result in personal injury.
  1. Turn the ignition switch to the OFF position.
  2. Remove the ignition key.
  3. Put on safety glasses.
  4. Remove the seat belt pretensioner from the vehicle. Refer to Seat Belt Buckle Pretensioner Replacement .
  5. When carrying a pretensioner to the deployment area keep the open end of pretensioner pointed away from the body.
    6. Fig 2: Pretensioner Deployment Area
    GM483844Courtesy of GENERAL MOTORS CORP.
  6. Clear a space on the ground about 1.85 M (6 ft) in diameter for deployment of the pretensioner. If possible, use a paved, outdoor location free of activity. Otherwise, use a space free of activity on the shop floor. Make sure you have sufficient ventilation.
  7. Make sure no loose or flammable objects are in the area.
  8. Place J 39401-B  in the center of the cleared area. See Special Tools .
  9. Fill the fixture plastic reservoir with water or sand.
    10. Fig 3: Mounting Pretensioner In SIR Deployment Fixture
    GM483846Courtesy of GENERAL MOTORS CORP.
  10. Mount the module (1) in the SIR deployment fixture (3) with the open end facing up using the following mounting method.
    • Adjust and secure the arms (4) of J 39401-B  to the deployment fixture (3). See Special Tools .
    • To mount, use the proper size bolt (2) and nut (5) with washers in order to secure the pretensioner (1) to the deployment fixture brackets (4).
    • Securely tighten all fasteners prior to deployment.
    11. Fig 4: Identifying SIR Deployment Harness & Adapter
    GM68645Courtesy of GENERAL MOTORS CORP.
  11. Inspect the J 38826  SIR Deployment Harness and the appropriate pigtail adapter for damage. See Special Tools . Replace as needed.
  12. Short the 2 SIR deployment harness (1) leads together using one banana plug seated into the other.
  13. Connect the appropriate pigtail adapter (2) to the SIR deployment harness (1).
    14. Fig 5: Extending SIR Deployment Harness & Adapter
    GM483848Courtesy of GENERAL MOTORS CORP.
  14. Extend the SIR deployment harness and adapter to full length from the deployment fixture.
    15. Fig 6: Connecting Pretensioner To Adapter
    GM483850Courtesy of GENERAL MOTORS CORP.
  15. Connect the pretensioner (1) to the adapter (2) on the deployment harness (3).
    16. IMPORTANT: The rapid gas expansion involved with deploying a pretensioner is very loud. Notify all the people in the immediate area that you intend to deploy the seat belt pretensioner.
  16. Clear the area of people.
    17. Fig 7: Separating Banana Plugs
    GM39382Courtesy of GENERAL MOTORS CORP.
    CAUTION: When you are deploying a pretensioner for disposal, perform the deployment procedures in the order listed. Failure to follow the procedures in the order listed may result in personal injury.
  17. Separate the 2 banana plugs on the SIR deployment harness.
    18. Fig 8: Deploying Pretensioner
    GM483854Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: When the seat belt pretensioner deploys, the deployment fixture may jump about 30 cm (1 ft) vertically. This is a normal reaction of the seat belt pretensioner due to the force of the rapid expansion of gas inside the pretensioner.
  18. Place a 12V minimum/2A minimum power source, such as a vehicle battery, near the shorted end of the harness.
  19. Connect the SIR deployment harness wires to the power source. Pretensioner deployment will occur when contact is made.
  20. Disconnect the SIR deployment harness from the power source after the pretensioner deploys.
    21. Fig 9: View Of Deployment Harness Leads
    GM9581Courtesy of GENERAL MOTORS CORP.
  21. Seat 1 banana plug into the other in order to short the deployment harness leads.
  22. If the pretensioner did not deploy, disconnect the adapter and discontinue the procedure. Contact the Technical Assistance Group. Otherwise, proceed to the following steps.
  23. Put on a pair of shop gloves.
  24. Disconnect the pigtail adapter from the pretensioner as soon as possible.
  25. Inspect the pigtail adapter and the SIR deployment harness. Replace as needed.
  26. Dispose of the deployed pretensioner through normal refuse channels.
  27. Wash your hands with a mild soap.
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