1999 Buick LeSabre Owner's Manual - Page 124

yellowblue The oil light could come on briefly when you turn your key to RUN. It goes off once you turn it to START. That's just a check to be sure the light works. If it doesn't, be sure to have it fixed so it will be there to warn you if something goes wrong. But, when this light comes on and stays on, it means oil isn't going through your engine properly. You could be low on oil, or you might have some other oil problem. See your dealer for service. NOTICE: Damage to your engine from neglected oil problems can be costly and is not covered by your warranty. Check Oil Level Light (If Equipped) The CHECK OIL LEVEL light turns on for three seconds as a bulb check each time the ignition key is turned to RUN. If the light doesn't turn on, have your vehicle serviced. If the engine oil is more than one quart (0.95 L) low and the engine has been shut off for at least eight minutes, the CHECK OIL LEVEL light will turn on for about one minute and will then remain off until the next time you start the vehicle. If the CHECK OIL LEVEL light turns on, the engine oil should be checked at the dipstick then brought up to the proper level if necessary. See "Engine Oil" in the Index. 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. 2-68