SIR Disabling and Enabling |
Condition | Action |
If the vehicle was involved in an accident with an air bag deployment. |
Disconnect the negative battery cable(s) *. Refer to Repairs and Inspections Required After a Collision. |
When performing SIR diagnostics. |
Follow the appropriate SIR service manual diagnostic procedure(s) * |
When moving, removing or replacing an SIR component or a component attached to an SIR component. (Anytime you remove fasteners.) |
Disconnect the negative battery cable(s) * |
If the vehicle is suspected of having shorted electrical wires. |
Disconnect the negative battery cable(s) * |
When performing electrical diagnosis on components other than the SIR system. |
Remove the SIR/Airbag fuse(s) when indicated by the diagnostic procedure to disable the SIR system |
* DTCs will be lost when the negative battery cable is disconnected. |
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• |
Do not expose air bags to temperatures above 65°C (149°F). |
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Verify the correct replacement part number. Do not substitute a component from a different vehicle. |
• |
Use only original GM replacement parts available from your authorized GM dealer. Do not use salvaged parts for repairs to the SIR system. |
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Inflatable restraint sensing and diagnostic module (SDM) |
• |
Any air bag |
• |
Driver steering wheel air bag coil |
• |
Any impact sensor |
• |
Seat belt anchor and/or retractor pretensioners |
• |
Passenger presence module and/or occupant sensor |
1. |
Turn the steering wheel so that the vehicles wheels are pointing straight ahead. |
2. |
Place the ignition in the OFF position. |
3. |
Locate and remove the fuse(s) supplying power to the SDM. Refer to SIR Schematics or Electrical Center Identification Views. |
4. |
Wait 1 minute before working on the system. |
1. |
Place the ignition in the OFF position. |
2. |
Install the fuse(s) supplying power to the SDM. Refer to SIR Schematics or Electrical Center Identification Views. |
3. |
Turn the ignition switch to the ON position. The AIR BAG indicator will flash then turn OFF. |
4. |
Perform the Diagnostic System Check - Vehicle if the AIR BAG warning indicator does not operate as described. Refer to Diagnostic System Check - Vehicle. |
1. |
Turn the steering wheel so that the vehicles wheels are pointing straight ahead. |
2. |
Place the ignition in the OFF position. |
3. |
Disconnect the negative battery cable from the battery. Refer to Battery Negative Cable Disconnection and Connection. |
4. |
Wait 1 minute before working on the system. |
1. |
Place the ignition in the OFF position. |
2. |
Connect the negative battery cable to the battery. Refer to Battery Negative Cable Disconnection and Connection. |
3. |
Turn the ignition switch to the ON position. The AIR BAG indicator will flash then turn OFF. |
4. |
Perform the Diagnostic System Check - Vehicle if the AIR BAG warning indicator does not operate as described. Refer to Diagnostic System Check - Vehicle. |