Coolant Surge Tank Pressure Cap; Engine Overheating - Cadillac 2005 DeVille Owner's Manual

Adding Coolant
If you need more coolant, add the proper DEX-COOL
coolant mixture at the surge tank, but only when the
engine is cool.
CAUTION:
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You can be burned if you spill coolant on hot
engine parts. Coolant contains ethylene glycol,
and it will burn if the engine parts are hot
enough. Do not spill coolant on a hot engine.
When replacing the pressure cap, make sure the arrow
lines up with the tube.

Coolant Surge Tank Pressure Cap

®
Notice: If the pressure cap is not tightly installed,
coolant loss and possible engine damage may occur.
Be sure the cap is properly and tightly secured.
See Engine Compartment Overview on page 5-12 for
more information on location.

Engine Overheating

You will find an ENGINE COOLANT HOT, IDLE
ENGINE message or an ENGINE OVERHEATED,
STOP ENGINE message displayed in the Driver
Information Center (DIC). See DIC Warnings and
Messages on page 3-60 for more information. You will
also hear a chime.
There is also an engine temperature warning light
and/or gage on the instrument panel cluster. See Engine
Coolant Temperature Warning Light on page 3-49 and
Engine Coolant Temperature Gage on page 3-49.
5-27