What causes the security light to light up and how do you take it off on a 1991 Camaro?

Answer 1

The VATS (Vehicle Anti-Theft System) causes the Security light to go on. If the security light is on (besides for a brief moment when starting the car/turning the key), and you cannot start your car, it has to do with the resistor chip in your key. That's the black rectangular piece of plastic with a metal strip in the middle of it. Camaro ignitions need to match an electrical value to the value of the chip in your key to start the car. I believe there are 15 values ranging in ohms. When the ignition and the chip register the same value, you can start the car. If they don't, then you cannot. When you cannot start the car and the security light is on, that means that the ignition and the chip in the key either do not match or one is not registering. I had this problem in my camaro and had to wire a resistor into the VATS wire to bypass the system....basically, it thinks whatever key I use always has the correct value. Resistors are very cheap and you can do this yourself, I had a guy come out and do it just to make sure everything was right.