* Faulty Crash Sensor: These sensors detect impacts and trigger airbag deployment. A malfunctioning sensor can trigger the light even without a crash, or prevent deployment when needed.
* Low Voltage: A weak battery or problems in the car's electrical system can cause the light to illuminate.
* Damaged Wiring or Connectors: Worn, frayed, or corroded wiring within the SRS system can interrupt the circuit and activate the warning light. This is common in older vehicles like the LeSabre.
* Faulty Airbag Control Module (ACM): The ACM is the "brain" of the airbag system. A faulty ACM is a common, but more expensive, cause of airbag light issues.
* Faulty Airbag(s): A problem with the airbag itself (though less common than other issues) can also trigger the light.
* Faulty Seatbelt Pretensioner: These devices tighten seatbelts in a collision. A malfunctioning pretensioner can also set off the warning light.
* Faulty Occupant Sensor: Some vehicles have sensors that detect the presence and weight of occupants. A malfunctioning sensor can cause the light to illuminate.
How to Diagnose:
Unfortunately, simply knowing the light is on doesn't tell you *why*. You'll need to:
* Check your owner's manual: It might provide some basic troubleshooting steps or clues.
* Use an OBD-II scanner: A code reader that's compatible with the SRS system can retrieve diagnostic trouble codes (DTCs). These codes give a much clearer indication of the problem's location. Note: Not all OBD-II scanners can read SRS codes; you might need a more advanced scanner specifically designed for SRS systems.
* Take it to a qualified mechanic: A professional mechanic, ideally one experienced with older GM vehicles, will have the tools and expertise to diagnose and repair the problem safely and correctly. Attempting to fix this yourself is strongly discouraged, as improperly handling the airbag system can be very dangerous.
In short: Don't ignore the airbag light. Have it diagnosed and repaired by a professional as soon as possible. Your safety depends on it.
