For 1990-2009 cars

### General Service Instructions

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.

Important: The sensing and diagnostic module (SDM) maintains a reserved energy supply. The reserved energy supply provides deployment power for the SIR modules. Deployment power may be available for up to 2 minutes after disconnecting the vehicle power. Disabling the SIR system prevents deployment of the SIR modules from the reserved energy supply.

Important: 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 expose inflator modules to temperatures above 65 °C (147 °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

Important: Discard any of the following components if it has been dropped from a height of 96 cm (3 ft) or greater:

• | Inflatable restraint SDM

• | Inflatable restraint instrument panel (I/P) module

• | Inflatable restraint steering wheel module

• | Inflatable restraint steering wheel module clock-spring coil

• | Inflatable restraint roof side rail modules

• | Inflatable restraint side impact sensors (SIS)

• | Inflatable restraint seat belt pretensioners

• | Electronic front sensors

• | Front seat (with side impact module)