Cadillac 2010 STS Owner's Manual page 388

Cadillac 2010 automobile owner's manual
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4. With the coolant surge tank pressure cap off, start
the engine and let it run until you can feel the
upper radiator hose getting hot. The upper radiator
hose is the largest of the hoses which comes out
of the radiator, on the passenger side of the
vehicle. Watch out for the engine cooling fans.
By this time, the coolant level inside the coolant
surge tank may be lower. If the level is lower, add
more of the proper mixture to the coolant surge
tank until the level reaches the FULL COLD/FROID
line on the side of the coolant surge tank.
5. Then replace the pressure cap. Be sure the
pressure cap is hand-tight and fully seated.
Start the engine and allow it to warm up.
The vehicle has several indicators to warn of engine
overheating.
There are two engine hot messages that could be
displayed in the Driver Information Center (DIC).
See
DIC Warnings and Messages for more information.
6-32
If the engine is overheating, then you will find a coolant
temperature gage and a coolant warning light on the
instrument panel. See
and
You may decide not to lift the hood when this warning
appears, but instead get service help right away.
See
If you do decide to lift the hood , make sure the vehicle
is parked on a level surface.
Then check to see if the engine cooling fans are
running. If the engine is overheating, both fans should
be running. If they are not, do not continue to run the
engine and have the vehicle serviced.
for more information.
.

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