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Black plate (19,1)
GMC Sierra Denali Owner Manual (GMNA Localizing-U.S/Canada/Mexico-
7299750) - 2015 - crc - 6/9/14
Vehicle Care
10-19
Checking Coolant
The coolant surge tank is in the
engine compartment on the
passenger side of the vehicle. See
Engine Compartment Overview on
page 10-5
.
The vehicle must be on a level
surface when checking the coolant
level.
Check to see if coolant is visible in
the coolant surge tank. If the coolant
inside the coolant surge tank is
boiling, do not do anything else until
it cools down. If coolant is visible
but the coolant level is not at or
above the FULL COLD mark, add a
50/50 mixture of clean, drinkable
water and DEX-COOL coolant at the
coolant surge tank, but be sure the
cooling system is cool before this
is done.
5.3L V8 Engine Shown, 6.2L
V8 Engine Similar
6.0L V8 Engine
The coolant level should be at or
above the FULL COLD mark. If it is
not, there may be a leak in the
cooling system.
How to Add Coolant to the
Coolant Surge Tank
If the vehicle has a diesel engine,
see
“
Cooling System
”
in the
Duramax diesel supplement for the
proper coolant fill procedure.
{
Warning
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.