Chevrolet Cruze Repair Manual: SIR Service Precautions
SIR Service Precautions
Warning: When performing service on or near the SIR components or the SIR wiring, the SIR system must be disabled. Failure to observe the correct procedure could cause deployment of the SIR components. Serious injury can occur. Failure to observe the correct procedure could also result in 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 retractor pretensioners
- Inflatable restraint front end sensors
SIR Identification Views
The SIR Identification Views shown below illustrate the approximate location
of all SIR components available for the vehicle. This will assist
in determining the appropriate SIR Disabling and Enabl ...
Front End Inflatable Restraint Discriminating Sensor Replacement
Warning: Refer to SIR Warning in the Preface section.
Warning: Following the deployment of a side impact air bag, inspect the
following parts for damage. Replace these parts if
necessary:
...
Other materials:
Repairs and Inspections Required After a Collision
Warning: Restraint systems can be damaged in a collision. To help
avoid injury and ensure that all parts in need of replacement are
replaced:
Replace any seat belt system that was in use during the
collision serious enough to deploy any automatic restraint device such as
air
bags and ...
Engine Heater
The engine heater, if available, can help in cold weather conditions at or below
−18°C (0°F) for easier starting and better fuel economy during engine warm-up. Plug
in the heater at least four hours before starting the vehicle. An internal thermostat
in the plug end of the cord will prev ...
Different Size Tires and Wheels
If wheels or tires are installed that are a different size than the original
equipment wheels and tires, vehicle performance, including its braking, ride and
handling characteristics, stability, and resistance to rollover may be affected.
If the vehicle has electronic systems such as antilock ...
