1997 Pontiac Trans Sport Owner's Manual - Page 205

If the light stops flashing and remains steady, see "If on This light shouldcome on, asa check to show youit is the Light Is On Steady" following. working, when the ignitionis on and the engine not is running. If the light doesn't come on, have repaired. it If the light continues flash, whenit is safe to do so, to This light willalso come on during a malfunction in one stop the vehicle. Find a safe place to your vehicle. park of two ways: Turn the keyoff, wait at least 10 seconds and restart the engine. If the light remains steady, see "If the Light on Light Flashing -- A misfire condition has been If Is On Steady" following. the light is still flashing, detected. A misfire increases vehcle emissions and follow the previous steps, and drive the vehicle to your may damage the emission control system on your for vehicle. Dealer or qualified service center diagnosis dealer or qualified service center service. and service is required. If the Light Is On Steady Light On Steady -- An emission control system You may be able to correct the emission system malfunction has been detected on your vehicle. malfunction by considering the following: Dealer or qualified service center diagnosis and service may be required. Did you recently put into your vehicle? fuel If the LightIs Flashing The following may prevent more serious damage to your vehicle: 0 Reducing vehicle speed. Avoiding hard accelerations. 0 Avoiding steep uphill grades. If you are towing a trailer, reduce the amountof cargo being hauled as soon it is possible. as If so, reinstall thefuel cap, makingsure to fully install the cap.The diagnostic systemcan determine if the fuel cap has been off or improperly installed.A loose or left missing fuel cap will allowfuel to evaporate into the atmosphere. A few driving trips with the properly cap installed should turn light off. the Did you just drive througha deep puddleof water? If so, your electrical system may wet. The condition be the will usually be corrected when electrical system dries out.A few driving trips should the light off. turn 0 2-104