1996 Oldsmobile Silhouette Owner's Manual - Page 142

I NOTICE: If you keep driving your vehicle with this light on, after a while, your emission controls not may work as well, your fuel economy may not be as good and your engine may not runsmoothly. as This could lead to costly repairs that may not be covered by your warranty. This light should come on, as a check to show you it is working, when the ignition is on and the engine is not running. If the light doesn't come on,have it repaired. This light will also come on during a malfunction in one of two ways: 0 The following may prevent more serious damageto your vehicle: 0 0 0 Reduce vehicle speed. Avoid hard accelerations. Avoid steep uphill grades. If towing a trailer, reduce the amount of cargo being hauled as soon as it is possible. 0 If the light stops flashing and remains on steady, see "If the Light Is On Steady" following. 0 Light Flashing-- A misfire condition has been detected. Amisfire increases vehicle emissions and may damage the emission control system on your vehicle. Retailer or qualified service center diagnosis and service is required. Light On Steady-- An emission control system malfunction has been detected on your vehicle. Retailer orqualified service center diagnosis and service may be required. If the light continues to flash, when it is safe to do so, stop the vehicle. Put your vehicle in PARK (P). Turn the key off, wait at least 10 seconds and restart the engine. If the light remains on steady, see "If the Light Is On Steady" following.If the light is still flashing follow the previous steps, and drive the vehicle to your retailer or qualified service center for service.