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 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 sensing and diagnostic module (SDM) |
| • | Inflatable restraint I/P module |
| • | Inflatable restraint steering wheel module |
| • | Inflatable restraint steering wheel module coil |
| • | Inflatable restraint roof side rail modules |
| • | Inflatable restraint side impact sensors (SIS) |
| • | Inflatable restraint seat belt pretensioners |
| • | Inflatable restraint front end sensor |
