GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-17942154) - 2025
Vehicle Care 325
The cooling system allows the engine to
m
a
intain the correct working temperature.
5.3L V8 Engine
1.
Engine Electric Cooling Fans (Out of View)
2. Coolant Surge Tank and Pressure Cap
6.2L V8 Engine
1.
Engine Electric Cooling Fans (Out of View)
2. Coolant Surge Tank and Pressure Cap
{ Warning
A
n underhood electric fan can start up
ev
en when the engine is not running and
can cause injury. Keep hands, clothing,
and tools away from any underhood
electric fan.
{ Warning
D
o not touch heater, radiator, a/c pipes or
ho
ses, or other engine parts. They can be
very hot and can burn you. Do not run the
engine if there is aleak; all coolant could
leak out. That could cause an engine fire and
can burn you. Fix any leak before driving
the vehicle.
Engine Coolant
Th
e cooling system in the vehicle is filled
with DEX-COOL engine coolant. This coolant
is designed to remain in the vehicle for
5 years or 240 000 km (150,000 mi), whichever
occurs first.
The following explains the cooling system and
how to check and add coolant when it is low. If
there is a problem with engine overheating, see
Engine Overheating 3328.
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