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The security system is activated all the time unless the proper key is in the ignition its part of the gm vatsII system, the only time you will see the light on is if there is a problem with the resistor pellet in the key being out of range or if there is a problem with the computer that runs the system also known as the vats II brain. there is three parts to the system if you look up gm security system or vats II on the internet it will explain everything in detail and give diagrams.

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16y ago

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