1997 Cadillac DeVille Owner's Manual - Page 144

Engine Coolant Temperature Warning Light This light tells you that your engine has overheated. You should stop the car and turn the engine off as soon as possible. A warning chime should also sound if this light comes on. Engine Coolant Temperature Gage This gage showsthe engine coolant temperature. If the gage pointer moves into the red area, theengine is too hot. Analog Cluster As a check, the light shouldcome on for a few seconds when you start your engine. In section "Problems on the the Road," this manual explains what to do. See "Engine Overheating" in the Index. That reading means thesame thing as the warning light -- the engine coolant has overheated. section The "Problems onthe Road" in this manual explains what to do. See "Engine Overheating" in the Index.