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Black plate (20,1)
GMC Yukon/Yukon XL Owner Manual (GMNA-Localizing-U.S./Canada-
6081505) - 2014 - crc - 4/23/13
10-20
Vehicle Care
distances and/or towing a trailer in
the overheat protection mode
should be avoided.
Notice:
After driving in the
overheated engine protection
operating mode, to avoid engine
damage, allow the engine to cool
before attempting any repair. The
engine oil will be severely
degraded. Repair the cause of
coolant loss, change the oil and
reset the oil life system. See
Engine Fan
The vehicle electric cooling fans
may be heard spinning at low speed
during most everyday driving. The
fans may turn off if no cooling is
required. Under heavy vehicle
loading, trailer towing, high outside
temperatures, or operation of the air
conditioning system, the fans may
change to high speed and an
increase in fan noise may be heard.
This is normal and indicates that the
cooling system is functioning
properly. The fans will change to low
speed when additional cooling is no
longer required.
Power Steering Fluid
See
for reservoir location.
When to Check Power Steering
Fluid
It is not necessary to regularly
check power steering fluid unless
there is a leak suspected in the
system or an unusual noise is
heard. A fluid loss in this system
could indicate a problem. Have the
system inspected and repaired.
How to Check Power Steering
Fluid
To check the power steering fluid:
1. Turn the key off and let the
engine compartment cool down.
2. Wipe the cap and the top of the
reservoir clean.
3. Unscrew the cap and wipe the
dipstick with a clean rag.
4. Replace the cap and completely
tighten it.
5. Remove the cap again and look
at the fluid level on the dipstick.
The level should be at the FULL
COLD mark. If necessary, add only
enough fluid to bring the level up to
the mark.
What to Use
To determine what kind of fluid to
use, see
. Always
use the proper fluid.