Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
All Models Except Pickups With Passenger Air Bag
Turn ignition switch from OFF to ON or RUN position. AIR BAG warning light should flash 7 times (6-10 times on DeVille) and then turn off.
The following AIR BAG warning light conditions indicate possible SIR system faults:
- Light does not illuminate at all.
- Light remains illuminated when ignition is turned on.
- Light illuminates while vehicle is driven.
SIR system faults are usually due to a disconnected/loose electrical connector caused by previous service on vehicle. Always check all Yellow SIR connectors for loose connections or damage.
If all connectors are okay, and AIR BAG warning light is still not operating properly, diagnose SIR system. Repair air bag system as necessary.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.