This light will come on briefly when you turn the key toward START. The light will stay on until the engine starts.

If the light flashes, the Passlock® system has entered a tamper mode. If the vehicle fails to start, see Passlock® .

If the light comes on continuously while driving and stays on, there may be a problem with the Passlock® system. Your vehicle will not be protected by Passlock®, and you should see your GM dealer.

Also, see Content Theft-Deterrent for additional information regarding the SECURITY light.