1996 Oldsmobile Silhouette Owner's Manual - Page 141

Low Coolant Light If this light comes on, your system is low on coolant and the engine may overheat. Malfunction IndicatorLamp (Service EngineSoon Light) Your Oldsmobile is equipped with a computer which monitors operation of the fuel, ignition and emission control systems. I i LOW SERVICE ENGINE SOON To prevent damage to your engine, immediate action is required. See "Engine Coolant"in the Index and have your vehicle serviced as soon as possible. This system is called OBD I1 (On-Board Diagnostics-Second Generation) and is intended to assure that emissions are at acceptable levels for the life of the vehicle, helping to produce a cleaner environment. The SERVICE ENGINE SOON light comes on to indicate that there is a problem and service is required. Malfunctions often will be indicated by the system before any problem is apparent, which may prevent more serious damage to your vehicle. This system is also designed to assist your service technician in correctly diagnosing any malfunction.