1998 Pontiac Grand Am Owner's Manual - Page 125

If the Light Is On Steady Have you recently changed brands of fuel? You may be able to correct the emission system If so, be sure to fuel your vehicle with quality fuel (see malfunction by considering the following: "Fuel" in the Index). Poor fuel quality will cause your You engine notto run as efficiently as designed. may Did you recently putfuel into your vehicle? you notice thisas stalling after start-up, stalling when If so, reinstall the fuel cap, making sure to fully install put the vehicle into gear, misfiring, hesitation on the cap. The diagnostic system can determine if the fuelacceleration or stumbling on acceleration. (These off A cap has been left or improperly installed. loose or is conditions may go away once the engine warmed up.) missing fuel cap will allow fuel evaporate into the to This will be detected by the system and cause the light atmosphere. A few driving trips with the cap properly to turn on. the installed should turn light off. If you experience one or more these conditions, of Did you just drive through a deep puddleof water? change thefuel brand you use. Itwill require at least one full t n of the proper fuel to ak turn the lightoff. If so, your electrical system may be The condition wet. will usually be corrected when the electrical system If none of the above steps have made the light turn off, turn dries out.A few driving trips should the lightoff. have your dealer or qualified service center check the test vehicle. Your dealer has the proper equipment and diagnostic tools fix any mechanical or electrical to 'I problems that may have developed. ' 2-64