2003 Cadillac Seville Owner's Manual - Page 154

Service Engine Soon Light in the United States or Check Engine Light in Canada TEMP -IF-TEMP Canada SERVICE ENGINE SOON J United States United States This gage shows the engine coolant temperature. If the gage pointer moves into the shaded area, the engine is too hot. That reading means the same thing as the warning light - the engine coolant has overheated. See Engine Overhmtin_non pa_ne.5-?9. Canada Your vehicle is equipped with a computer which monitors operation of the fuel, ignition and emission control systems. 3-43