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smash it with an axe as fast as you can
check the vats on your key and the ignition switch. anti theft devise goes the security light comes on in the dash
Check the door hood and trunk switches. The security system is telling you that it will not set securely.
ANWSER
bad VATS, vehicle security system. you need a new ignition tumbler then another key made. the tumbler is 50 bucks at auto stores and the key is 45 for a copy.
Read the book and I mean read it all!
The security light might come on while you are driving because it has a motion detector on it and when it senses the cars movement the light comes on.
The check engine light comes on at start up for a bulb check. If it stays on with the engine running the computer has detected a malfunction. You need to have it checked for codes.
unhook the negative cable from battery for 10 minutes. Hook negative back up and turn ignition key to on position. Leave on for atleast 20 minutes or until security light goes off.
it might be the chip in the key. i know it does it in later model cars.
it usually means the ignition cylinder is going bad. I had it go on one of my camaros and it went in a month, my other camaro its been on 3 yrs and still works. just be aware one day you might turn that key and get nothing. It is usually the wires that control the chip in the key tear away from the lock cylinder.
My guess is that maybe a relay or fuse has went bad in the electrical system, causing the security light to stay on constantly, therefore leaving a circuit open. This could be draining your battery, which is why your car is dead.