1996 Chevrolet S10 Pickup Owner's Manual - Page 108

Engine Coolant Temperature Gage This gage shows the engine coolant temperature. If the gage pointer moves into the red area, your engine is too hot! Malfunction Indicator Lamp (Service Engine Soon Light) Your vehicle is equipped with a computer which monitors operation of the fuel, ignition and emission control systems. 260 TEMP SERVICE ENGINE SOON It means that your engine coolant has overheated. If you have been operating your vehicle under normaldriving conditions, you should pull off the road, stop your vehicle and turn off the engine as soon aspossible. In "Problems on the Road," this manual shows you what to do. See "Engine Overheating" in the Index. This system is called OBD I1 (On-Board Diagnostics-Second Generation) and intended to assure is that emissions are at acceptable levels for the life the of vehicle, helping to produce a cleaner environment.(In Canada, OBD I1 is replaced by Enhanced Diagnostics.) The SERVICE ENGINE SOON light comes on to indicate that there isa problem and serviceis required. Malfunctions often will be indicated the system before by any problem is apparent, which may prevent more seriou damage to your vehicle. This system also designed to is assist your service technician correctly diagnosing in any malfunction. 2-57