1998 Buick Park Avenue Owner's Manual - Page 147

If so, be sure to he1 your vehicie with quality fuel (see "Fuel" in the Index). Poor fuel quality will cause your engine not to F J as efficiently as designed. YQU ~ may notice this as stalling after start-up, stalling when you pent the vehicle into gear, misfiring, hesitation on acceleration or stumbling on acceleration. (These conditions may go away once the engine is warned up.j This will be detected by the system and cause the light to turn OR. If you experience one or more of these conditions, chmge the fuel brand you use. It will n-ecpire at least one full tank of the proper fuel to tuna the light off. If so, your electrical system may be wet. The condition will usually be cgrrected when the electrical system dries out. A few driving trips should turn the light off. Maw you recently changed brands of fuel? If none of the above steps hove lrirade 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 nnechanicai or electnictrl problems that may have developed.