GM Service Manual Online
For 1990-2009 cars only

Object Number: 1551172  Size: B3

During normal operation, the SECURITY light will go off approximately 5 seconds after the key is turned to the ON position.

If the engine stalls and the SECURITY light flashes, wait until the light stops flashing before trying to restart the engine. Remember to release the key from START as soon as the engine starts.

If the engine is running and the SECURITY light comes on, you will be able to restart the engine if your turn the engine off. However, your Passlock system is not working properly and must be serviced by your retailer. Your vehicle is not protected by Passlock at this time. You may also want to check the fuses (see Fuses and Circuit Breakers ). See Passlock® for more information.