GM Service Manual Online
For 1990-2009 cars only
    • Airbag modules should not be subjected to temperature above 65°C (149°F).
    • An airbag module or sensing and diagnostic module (SDM) should not be used if it has been dropped from a height of 0.9 meters (3 feet) or greater.
    • When an SDM is replaced, it must be oriented with the arrow on the SDM pointing toward the front of the vehicle.
    • It is very important for the SDM to be installed flat on the mounting surface, parallel to the vehicle's longitudinal axis.
    • To avoid setting diagnostic trouble codes (DTCs), do not apply power to the SIR unless all components are connected or a diagnostic chart request it.
    • The Diagnostic System Check - SIR must be the starting point of any SIR diagnostics. The Diagnostic System Check will verify proper AIRBAG indicator operation and will lead you to correct chart to diagnose any SIR malfunctions. Bypassing these procedures may result in extended diagnostic time and incorrect parts replacements.

Deploy airbags before disposing of them. If a vehicle is to be scrapped, the airbag may be deployed inside the vehicle.

Caution: When deploying an airbag inside the vehicle, make sure the vehicle doors are closed and the side windows are fully open. Wear safety glasses throughout the entire procedure. Make sure the deployment area in the vehicle is clear of people, or loose objects. Failure to follow these guidelines could result in personal injury or vehicle damage.

    • Before deploying the airbags, remove all loose objects from the airbag's expansion area.
    • Deploy the airbags with the vehicle doors closed and the side windows open.
    • Deploy the airbags only in an evacuated area. Service personnel who must be present during the deployment should be at least 10 meters (33 feet) in front of the vehicle.
    • Do not connect the voltage source until after having completed all other preparations for the deployment of airbags.
    • Allow a deployed airbag module or pretensioner to cool for at least 30 minutes before handling.
    • Wear gloves and eye protection during the disposal procedure.
    • If the deployment fails, disconnect the voltage source and wait 5 minutes before approaching the vehicle.

Deployment Procedure

    Caution: Refer to Sensing and Diagnostic Module Voltage after Ignition is Turned Off Caution in the Preface section.


    Object Number: 1280488  Size: SH
  1. Disconnect both battery cables and place the battery at least 10 meters (33 feet) from the vehicle.
  2. Remove the driver side knee bolster or instrument panel lower cover from the steering column.
  3. At the lower steering column, cut the two wires leading from the supplemental inflatable restraints (SIR) harness to the clock spring.
  4. Strip 13 mm (0.5 in) of the insulation from the ends of wires leading to the clock spring.
  5. Use two additional wires, each at least 10 meters (33 ft) long, to reach from the deployment battery to the inflator module.
  6. Strip 13 mm (0.5 in) of the insulation from the ends of these two additional wires.
  7. Twist the two wires together at one end.
  8. Place the twisted ends of the two wires near the deployment battery. Do not connect the wires to the battery at this time.
  9. Using the free ends of the 10 m (33 ft) wires leading to the clock spring, make two splices, one at each wire from the airbag modules.
  10. Wrap the wires with insulation tape.
  11. Now that the free ends of the 10 m (33 ft) wires are spliced to the airbag module wires, and the ends that are twisted together are near the deployment battery, clear the area.
  12. Untwist the wires that near the deployment battery.
  13. Touch one wire to the positive battery terminal and touch the other wire to the negative battery terminal. The airbag will deploy.
  14. Repeat the procedure for the passenger airbag and pretensioners.
  15. Using proper precautions, dispose of the deployed airbag/pretensioner. Refer to Deployed Airbag Module Disposal Procedure.

Airbag Module Deployment - Outside of Vehicle

If the vehicle is within the warranty period, contact the General Motors regional service manager for approval or special instructions before deploying the airbag modules.

Deploy airbag modules in following situations:

    • If the vehicle is to be scrapped. Refer to Inflator Module Handling and Scrapping .
    • If an airbag module is damaged during transit, storage, or service.

    Caution: When deploying a SIR component for disposal, perform the deployment procedures in the order listed. Failure to observe the procedures in the order listed may result in personal injury.

  1. Position the airbag module face up, on flat ground outdoors, at least 10 m (33 ft.) from any obstacles or people.
  2. Place a vehicle battery at least 10 m (33 ft) away from the airbag module.
  3. Deploy the airbag module by following the procedure below.
  4. If you do not have the deployment tool follow below procedure.
  5. Cut the yellow wires to the airbag module/pretensioner.
  6. Strip 13 mm (0.5 in) of the insulation from the end of the wires leading to the airbag module/pretensioner.
  7. Use two additional wires, each at least 10 m (33 ft) long, to reach from the deployment battery to the airbag module/pretensioner.
  8. Strip 13 mm (0.5 in) of the insulation from the ends of these two additional wires.
  9. Twist the two wires together at one end.
  10. Place the twisted ends of the two wires near the deployment battery. Do not connect the wires to the battery at this time.
  11. Using the free ends of the 10 m (33ft) wires leading to the airbag module/pretensioner, make two splices, one at each wires from the airbag module/pretensioner.
  12. Wrap the splices with insulating tape.
  13. Now that the free ends of the 10 meters (33 ft) wires are spliced to the airbag module/pretensioner wires, and the ends that are twisted together are near the deployment battery, clear the area.
  14. Untwist the wires that near the deployment battery.
  15. Tough one wire to the positive battery terminal and touch the other wire to the negative battery terminal. The airbag module/pretensioner will deploy.
  16. Using proper precautions, dispose of the deployed airbag module/pretensioner. Refer to Deployed Airbag Module Disposal Procedure.

Deployed Airbag Module Disposal Procedure


Object Number: 1280495  Size: SH

Caution: Safety precautions must be followed when handling a deployed inflator module (air bag). After deployment, the inflator module (air bag) surface may contain a small amount of sodium hydroxide, a by-product of the deployment reaction, that is irritating to the skin and eyes. Most of the powder on the inflator module (air bag) is harmless. as a precaution, wear gloves and safety glasses when handling a deployed inflator module (air bag), and wash your hands with mild soap and water afterwards.

Caution: After deployment, the metal surfaces of the SIR component may be very hot. To help avoid a fire or personal injury:

   • Allow sufficient time for cooling before touching any metal surface of the SIR component.
   • Do not place the deployed SIR component near any flammable objects.

Deploy an airbag or pretensioner before disposing of it. This includes those in a whole vehicle being scrapped. If the vehicle is still within the warranty period contact the General Motors regional service manager for approval or special instructions before deploying an airbag module or a pretensioner. Deployed airbag module or pretensioner should be disposed of in the same manner as other scrap parts, with the addition of the following steps:

  1. Place the deployed airbag or pretensioner in a sturdy plastic bag.
  2. Seal the plastic bag securely.
  3. Wash your hands and rinse them with water after handling a deployed airbag.