• J 39401-B SIR Deployment Fixture. See Special Tools.
• J 38826 SIR Deployment Harness. See Special Tools.
• An appropriate pigtail adaptor
CAUTION: Refer to SIR Seatbelt Pretensioner Handling Caution.
During the course of a vehicle's useful life, certain situations may arise which will require the disposal of a live and undeployed seat belt pretensioner. Do not dispose of a live and undeployed seat belt pretensioner through normal disposal channels until the seat belt pretensioner has been deployed. The following information covers the proper procedures for disposing of a live and undeployed seat belt pretensioner. Do not deploy the seat belt pretensioner in the following situations:
• After replacement of a seat belt pretensioner under warranty. The seat belt pretensioner may need to be returned undeployed to the manufacturer.
• If the vehicle is the subject of a Product Liability report, GM1241, related to the SIR system or the seat belt system. If the vehicle is subject to the Product Liability report, do not alter the SIR or seat belt system in any manner.
• If the vehicle is involved in a campaign affecting the seat belt pretensioners. Follow the instructions in the Campaign Service Bulletin for proper SIR handling procedures.
The seat belt pretensioner can be deployed inside or outside of the vehicle. The method used depends upon the final disposition of the vehicle. Review the following procedures in order to determine which will work best in a given situation.
Deployment Outside Vehicle for Seat Belt Pretensioners
Deploy the seat belt pretensioners outside of the vehicle when the vehicle will be returned to service. Situations that require deployment outside of the vehicle include the following:
• Using the SIR diagnostics, it is determined that the seat belt pretensioner is malfunctioning.
• The seat belt pretensioner pigtail, if equipped, is damaged.
• The seat belt pretensioner connector is damaged.
• The seat belt pretensioner connector terminals are damaged.
Deployment and disposal of a malfunctioning seat belt pretensioner is subject to any required retention period.
CAUTION: In order to prevent accidental deployment and the risk of personal injury, do not dispose of an undeployed inflatable restraint seat belt pretensioner as normal shop waste. Undeployed seat belt pretensioners contain substances that could cause severe illness or personal injury if their sealed containers are damaged during disposal. Use the following deployment procedures to safely dispose of an undeployed seat belt pretensioner. Failure to observe the following disposal methods may be a violation of federal, state or local laws.
Fig. 108: Proper Transportation of Seat Belt Pretensioner Courtesy of GENERAL MOTORS CORP.
1. Turn OFF the ignition.
2. Remove the ignition key.
3. Put on safety glasses.
4. Remove the seat belt pretensioner from the vehicle. Refer to Seat Belt Retractor Pretensioner Replacement - Front.
5. When carrying a seat belt pretensioner to the deployment area, keep fingers clear of the seat belt webbing.
Fig. 109: Illustrating Proper Space For Deployment Of Pretensioner Courtesy of GENERAL MOTORS CORP.
6. Clear a space on the ground about 1.85 m (6 ft) in diameter (a) for deployment of the seat belt 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 the J 39401-B in the center of the cleared area. See Special Tools.
9. Fill the fixture plastic reservoir with water or sand.
Fig. 110: Seat Belt Pretensioner And SIR Deployment Fixture Courtesy of GENERAL MOTORS CORP.
10. Mount the seat belt pretensioner (1) in the SIR deployment fixture (3) with the open end facing up using the following mounting method.
• Adjust and secure the J 39401-B arms (4) to the deployment fixture. See Special Tools.
• To mount, use the proper size bolt (2) and nut (5) with washers in order to secure the seat belt pretensioner (1) to the deployment fixture brackets.
Fig. 111: Identifying SIR Deployment Harness & Adapter Courtesy of GENERAL MOTORS CORP.
• Securely tighten all fasteners prior to deployment.
11. Inspect the J 38826 and the appropriate pigtail adapter for damage. See Special Tools. Replace as needed.
12. Short the 2 SIR deployment harness (1) leads together using 1 banana plug seated into the other.
13. Connect the appropriate pigtail adapter (2) to the SIR deployment harness.
Fig. 112: Identifying Seat Belt Pretensioner Connector, Adapter & Deployment Harness
Courtesy of GENERAL MOTORS CORP.
14. Extend the SIR deployment harness and adapter to full length from the deployment fixture.
15. Connect the seat belt pretensioner connector (1) to the adapter (2) on the deployment harness (3).
IMPORTANT: When deploying a seat belt pretensioner, the rapid expansion of gas is very loud. Notify the people in the immediate area
that a seat belt pretensioner will be deployed.
16. Clear the area of people.
Fig. 113: Separating Banana Plugs Courtesy of GENERAL MOTORS CORP.
17. Separate the 2 banana plugs on the SIR deployment harness.
Fig. 114: Deploying Seat Belt Pretensioner Courtesy of GENERAL MOTORS CORP.
18. Place a 12 volt minimum/2 amp 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. Seat belt pretensioner deployment will occur when contact is made.
20. Disconnect the SIR deployment harness from the power source after the seat belt pretensioner deploys.
Fig. 115: View Of Deployment Harness Leads Courtesy of GENERAL MOTORS CORP.
21. Seat one banana plug into the other in order to short the deployment harness leads.
22. If the seat 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 seat belt pretensioner as soon as possible.
25. Dispose of the deployed seat belt pretensioner through normal refuse channels.
26. Wash hands with a mild soap.