1999 Chevrolet Express Van Owner's Manual - Page 129

yellowblue Security Light CAUTION: Don't keep driving if the oil pressure is low. If you do, your engine can become so hot that it catches fire. You or others could be burned. Check your oil as soon as possible and have your vehicle serviced. This light will come on briefly when you turn the ignition key to START. NOTICE: Damage to your engine from neglected oil problems can be costly and is not covered by your warranty. The light will stay on until the engine starts. If the light flashes, the PasslockR System has entered a tamper mode. If the vehicle fails to start, see "Passlock" in the Index. 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. 2-61