1995 Buick LeSabre Owner's Manual - Page 105

Engine Coolant Temperature Gage Malfunction IndicatorLamp (Service Engine Soon) A computer monitors operation of your fuel, ignition and emission control systems. CHECK If you have the gage cluster, you have a gage that shows the engine coolant temperature. If the gage pointer moves into the red area your engine is too hot! The engine coolant temperature gage indicates the coolant temperature in degrees Fahrenheit. The Canadian instrument panels indicate the coolant temperaturein degrees Celsius. That reading means the same thing as warning light. the has It means that your engine coolant overheated. If you have been operating your vehicle under normal driving conditions, you should pull off the road, stop your vehicle and turn off the engine as soon as possible. This light should come on when the ignition is on, but the engine is not running, as a check to show you it is working. If it does not come on at all, have it fixed right away. If it stays on, or it comes on while you are driving, the computer is indicating that you have a problem. You should take your vehicle in for service soon. In the chapter "Problems on the Road," this manual explains what to do. See "Engine Overheating" the in Index. 2-49