Adding Coolant; Coolant Surge Tank Pressure Cap; Engine Overheating - GMC Sierra 2005 Owner's Manual

If your vehicle is equipped with a low coolant sensor
and the LOW COOLANT LEVEL message comes
on and stays on, it means you are low on engine
coolant. See "LOW COOLANT LEVEL" under DIC
Warnings and Messages on page 3-52.

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:
{
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 it is
hand-tight and fully seated.

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

You will find a coolant temperature gage on your
vehicle's instrument panel. See Engine Coolant
Temperature Gage on page 3-41.
In addition, you will find an ENGINE OVERHEATED
and a REDUCED ENGINE POWER message in
the Driver Information Center (DIC) on the instrument
panel. See DIC Warnings and Messages on page 3-52.
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