SIR Disabling and Enabling: Notes
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2008 GMC Yukon XL, 2008 GMC Yukon, 2008 Chevrolet Tahoe, 2008 Chevrolet Suburban, and 2008 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
SIR component location affects how a vehicle should be serviced. There are parts of the SIR system installed in various locations around a vehicle. To find the location of the SIR components refer to SIR Identification Views .
There are several reasons for disabling the SIR system, such as repairs to the SIR system or servicing a component near or attached to an SIR component. There are several ways to disable the SIR system depending on what type of service is being performed. The following information covers the proper procedures for disabling/enabling the SIR system.
| 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 removing or replacing an SIR component or a component attached to an SIR component. | 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. | |