1998 Chevrolet Express Van Owner's Manual - Page 132

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