1999 Buick LeSabre Owner's Manual - Page 123

yellowblue Did you just drive through a deep puddle of water? If so, your electrical system may be wet. The condition will usually be corrected when the electrical system dries out. A few driving trips should turn the light off. Have you recently changed brands of fuel? If so, be sure to fuel your vehicle with quality fuel (see "Fuel" in the Index). Poor fuel quality will cause your engine not to run as efficiently as designed. You may notice this as stalling after start-up, stalling when you put the vehicle into gear, misfiring, hesitation on acceleration or stumbling on acceleration. (These conditions may go away once the engine is warmed up.) This will be detected by the system and cause the light to turn on. If you experience one or more of these conditions, change the fuel brand you use. It will require at least one full tank of the proper fuel to turn the light off. If none of the above steps have made the light turn off, have your dealer or qualified service center check the vehicle. Your dealer has the proper test equipment and diagnostic tools to fix any mechanical or electrical problems that may have developed. Oil Pressure Light/Gage Standard Cluster If your vehicle has the standard instrument panel cluster, this light will come on if there is a problem with your engine oil pressure. Gage Cluster If your vehicle has the optional gage cluster, you can read your oil pressure directly from the gage on your instrument panel. A small light to the left of the gage will come on if there is a problem with the engine oil pressure. 2-67