Chevrolet Sonic Repair Manual: SIR Service Precautions
- General Service Instructions
-
Warning:
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.
Note:
The Inflatable Restraint Sensing and Diagnostic Module (SDM) maintains a reserved energy supply. The reserved energy supply provides deployment power for the SIR air bags. Deployment power may be available for up to 2 minutes after disconnecting the vehicle power. Disabling the SIR system prevents deployment of the SIR air bags from the reserved energy supply.
Note:
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 air bags to temperatures above 85?€‰?°C?€‰ (185?€‰?°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
Note:
Discard any of the following components if it has been dropped from a height of 80?€‰cm?€‰(15.75?€‰in) or greater:
- Inflatable Restraint Sensing and Diagnostic Module
- Passenger instrument panel air bag
- Driver steering wheel air bag
- Driver steering wheel air bag coil
- Roof rail air bags
- Front and /or side impact sensors
- Seat belt achor and/or retractor pretensioners
- Front seat side air bag
- Knee air bag
SIR Seatbelt Pretensioner Handling Warning
Warning: When carrying an undeployed inflatable restraint seat belt
retractor pretensioner:
Do not carry the seat belt pretensioner by the seat belt webbing or
pigtail connector, if e ...
SIR Warning
Warning: This vehicle is equipped with a Supplemental Inflatable Restraint
(SIR) System. Failure to follow the correct procedure could cause the following
conditions:
Air bag deploymen ...
Other materials:
Checking Coolant
The vehicle must be on a level surface when checking the coolant level.
It is normal to see coolant moving in the upper coolant hose return line when
the engine is running.
Check to see if coolant is visible in the coolant surge tank. If the coolant
inside the coolant surge tank is boiling, do ...
Steering Angle Sensor Centering
The steering angle sensor does not require centering often. Centering of the
steering angle sensor might be required after certain service procedures are performed.
Some of these procedures are as follows:
Wheel alignment
Steering gear replacement
Steering column replacement
Collision ...
Fastener Tightening Specifications - Wheels
Fastener Tightening Specifications
Application
Specification
Metric
English
Clamp Fit TPM Stem Locknut
7 Y Dynamically
62 lb in
Clamp ...
0.0046