GM Service Manual Online
For 1990-2009 cars only

Object Number: 811473  Size: A1

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 comes on continuously while driving and stays on, there may be a problem with the PASS-Key® III + system. Your vehicle will not be protected by PASS-Key® III +, and you should see your dealer.

If your vehicle has the content theft-deterrent alarm system, the security light will also turn on to indicate that arming has been initiated. See Content Theft-Deterrent for more information.