1998 Pontiac Grand Prix Owner's Manual - Page 145

If the LightIs Flashing The following may prevent more serious damage to your vehicle: Reducing vehicle speed. 0 If the LightIs On Steady You may be able to correct the emission system malfunction by considering the following: Did you recently put into your vehicle? fuel If so, reinstall thefuel cap, making sure to fully install the cap. The diagnostic system determine if the fuel can Avoiding steep uphill grades. cap has been left or improperly installed.A loose or off 0 If you are towing a trailer, reduce the amount of missing fuel cap will allow fuel evaporate into the to cargo being hauled as soon as it is possible. atmosphere. A few driving trips with the cap properly If the light stops flashing and remains on steady, see "If installed should turn the lightoff. the LightIs On Steady" following. Did you just drive througha deep puddle of water? it so, If the light continues to flash, when is safe to do If so, your electrical system may be wet. condition The stop the vehicle. Find a safe placeto park your vehicle. will usually be corrected when the electrical system Turn the key off, wait at least 10 seconds and restart the off. dries out. A few driving trips should turn the light engine. If the light remains on steady, see "Ifthe Light Are you low onfuel? Is On Steady" following.If the light isstill flashing, of follow the previous steps, and drive the vehicle to your As your engine starts to run out fuel, your engine may not run as efficiently as designed since small amounts of dealer or qualified service center for service. air are suckedinto the fuel line causing a misfire. The system can detect this. Adding fuel should correct this condition. Make sure to install the fuel capproperly. It will take a few driving trips to the light off. turn Have you recently changed brands fuel? of Avoiding hard accelerations. 2-70