* The car has been tampered with.
* The car's battery has been disconnected.
* The car's ignition has been turned on and off multiple times in quick succession.
* The car has been parked in a location where the car's security sensors have been tripped, such as near a metal object.
When the security light is on, the car will not start. In order to start the car, you will need to disarm the security system by entering the correct security code. The security code is a unique four-digit number that you will have received with your car's owner's manual. If you do not have the security code, you will need to take your car to a Chevrolet dealership to have it reprogrammed.
If the security light is flashing, this indicates that the security system is currently in the process of arming. If you see the security light flashing, you should wait until it stops flashing before trying to start the car.
