Security or Theft warning light picture on dash of cars and trucks that may come on or flash after stating up.
This warning could be on when the engine is running, indicating a fault
has been detected in the system. If left un-repaired, there is a good
possibility that the car will eventually not start.

If the light stays on after trying to start your car or truck and it wont, then
the system needs to be properly diagnosed by a mechanic.

Sometimes a re-learn procedure can be done to get the vehicle to start,
but may not on the next attemp.
Back to warning light index.
Theft Security Warning Light Indicator on GM Cars and Trucks. If This is on, the Vehicle May Not Start.
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