GMC 2007 Yukon XL, Owner'S Manual

Page: 478 / 630

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 462 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 252.
In addition, you will find an ENGINE
OVERHEATED STOP ENGINE, ENGINE
OVERHEATED IDLE ENGINE, and an ENGINE
POWER IS REDUCED message in the Driver
Information Center (DIC) on the instrument panel.
See DIC Warnings and Messages on page 272.
If Steam Is Coming From Your Engine
{
CAUTION:
Steam from an overheated engine can
burn you badly, even if you just open the
hood. Stay away from the engine if you
see or hear steam coming from it. Turn it
off and get everyone away from the
vehicle until it cools down. Wait until there
is no sign of steam or coolant before you
open the hood.
If you keep driving when the vehicles
engine is overheated, the liquids in it can
catch fire. You or others could be badly
burned. Stop your engine if it overheats,
and get out of the vehicle until the engine
is cool.
See Overheated Engine Protection
Operating Mode on page 480 for
information on driving to a safe place in an
emergency.
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