Coolant Surge Tank Pressure Cap; Engine Overheating - Cadillac CTS-V 2009 Owner's Manual

3. Add the proper DEX-COOL
fill neck until the coolant reaches the COLD FILL
line on the fill neck.
With the intercooler system pressure cap off, start
the engine and let it run for a couple of minutes.
Then turn the engine off. By this time, the coolant
level inside the fill neck may be lower. If the
level drops to where coolant is no longer visible in
the horizontal tube section of the fill neck, with
the engine off add more of the DEX-COOL
mixture to the fill neck until the level is again
visible in the horizontal tube section.
4. Then replace the pressure cap. Be sure the
pressure cap is hand-tight and fully seated.
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.
If the coolant is not at the proper level when the system
cools down again, see your dealer/retailer.
®
coolant mixture to the
®
coolant

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.
The coolant surge tank pressure cap must be fully
installed on the coolant surge tank. See Engine
Compartment Overview on page 5-14 for more
information on location.

Engine Overheating

The vehicle has several indicators to warn of engine
overheating.
There are two engine hot messages that may be
displayed in the Driver Information Center (DIC).
See DIC Warnings and Messages on page 3-58 for
more information.
You may decide not to lift the hood when this warning
appears, but instead get service help right away.
See Roadside Service on page 7-7.
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