Cadillac 2004 DeVille - Manual (Page 177)

Engine Coolant Temperature
Warning Light
This light tells you that
your engine has
overheated. As a check,
the light should come
on for a few seconds when
you start your engine.
If this light comes on and stays on, you should stop your
vehicle and turn the engine off as soon as possible. A
warning chime should also sound if this light comes on.
See Engine Overheating on page 5-29.
Engine Coolant Temperature Gage
United States
(Analog Only)
Canada (Analog Only)
3-51