If No Steam Is Coming From Your Engine - Cadillac 2003 CTS Owner's Manual

If No Steam Is Coming From Your Engine

An overheat warning, along with a low coolant message,
can indicate a serious problem. See "Low Coolant
Message" in the Index.
If you get an engine overheat warning with no low
coolant message, but see or hear no steam, the problem
may not be too serious. Sometimes the engine can get a
little too hot when you:
D
Climb a long hill on a hot day.
D
-
Stop after high speed driving.
D
Idle for long periods in traffic.
D
Tow a trailer.
If you get the overheat warning with no sign of steam,
try this for a minute or so:
1. In heavy traffic, let the engine idle in neutral while
stopped. If it is safe to do so, pull off the road, shift
to park or neutral and let the engine idle.
2. Set the temperature control to the highest heat setting
and open the windows, as necessary.
If you no longer have the overheat warning, you can
drive. Just to be safe, drive slower for about 10 minutes.
If the warning doesn't come back on, you can drive
normally.
If the warning continues and you have not stopped,
pull over, stop, and park your vehicle right away.
If there's still no sign of steam, you can idle the engine
for three minutes while you're parked. If you still have
the warning, turn off the engine and get everyone out of
the vehicle until it cools down.
You may decide not to lift the hood but to get service
help right away.
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