Cooling System - GMC 2015 Sierra Denali Owner's Manual

Warning (Continued)
cleaner not only cleans the air; it
helps to stop flames if the engine
backfires. Use caution when
working on the engine and do not
drive with the air cleaner/filter off.
Caution
If the air cleaner/filter is off, dirt
can easily get into the engine,
which could damage it. Always
have the air cleaner/filter in place
when you are driving.

Cooling System

If the vehicle has the Duramax
diesel engine, see the Duramax
diesel supplement for more
information.
The cooling system allows the
engine to maintain the correct
working temperature.
5.3L V8 Engine Shown, 6.2L
V8 Engine Similar
1. Coolant Surge Tank
2. Coolant Surge Tank
Pressure Cap
3. Engine Cooling Fan
®
Vehicle Care
6.0L V8 Engine
1. Coolant Surge Tank
2. Coolant Surge Tank
Pressure Cap
3. Engine Cooling Fan
Warning
An electric engine cooling fan can
start even when the engine is not
running. To avoid injury, always
keep hands, clothing, and tools
away from any engine
cooling fan.
10-17