Caution: When you are performing service on or near the SIR components or the
SIR wiring, you must disable the SIR system. Refer to Disabling the SIR System.
Failure to follow the correct procedure could cause air bag deployment,
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 inflator modules. Deployment power is available for as much
as 10 seconds after disconnecting the vehicle power. Disabling the
SIR system prevents deployment of the inflator modules 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 electronic frontal sensors (EFS) |
| • | Inflatable restraint IP module |
| • | Inflatable restraint seat belt pretensioners |
| • | Inflatable restraint sensing and diagnostic module (SDM) |
| • | Inflatable restraint side impact modules |
| • | Inflatable restraint side impact sensors (SIS) |
| • | Inflatable restraint steering wheel module |
| • | Inflatable restraint steering wheel module coil |
