Technician Safety Information

SIR Service Precautions

Caution: When performing service on or near the SIR components or the SIR wiring, the SIR system must be disabled. Refer to SIR Disabling and Enabling. Failure to observe the correct procedure could cause deployment of the SIR components, personal injury, or unnecessary SIR system repairs.

The inflatable restraint sensing and diagnostic module (SDM) maintains a reserved energy supply. The reserved energy supply provides deployment power for the air bags. Deployment power is available for as much as 1 minute after disconnecting the vehicle power. Disabling the SIR system prevents deployment of the air bags from the reserved energy supply.

General Service Instructions

The following are general service instructions which must be followed in order to properly repair the vehicle and return it to its original integrity:

* Do not handle the inflatable restraint vehicle rollover sensor when connected to vehicle power.
* Do not expose inflator modules to temperatures above 65°C (150°F).
* 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.

Discard any of the following components if it has been dropped from a height of 91 cm (3 ft) or greater:

* Inflatable restraint front end sensor
* Inflatable restraint instrument panel (I/P) module
* Inflatable restraint passenger presence system (PPS)
* Inflatable restraint roof rail module
* Inflatable restraint SDM
* Inflatable restraint side impact sensor (SIS)
* Inflatable restraint steering wheel module
* Inflatable restraint steering wheel module coil
* Inflatable restraint vehicle rollover sensor
* Seat belt pretensioner