Black plate (37,1)
GMC 2015i Yukon/Yukon XL Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-8431503) - 2015 - crc - 2/9/15
Driving and Operating
9-37
Drive Systems
Four-Wheel Drive
If equipped, four-wheel drive
engages the front axle for extra
traction. Read the appropriate
section for transfer case operation
before using.
{
Caution
Do not drive on clean, dry
pavement in 4
m
and 4
n
(if
equipped) for an extended period
of time. These conditions may
cause premature wear on the
vehicle
’
s powertrain.
Driving on clean, dry pavement in
four-wheel drive may:
.
Cause a vibration to be felt in
the steering system.
.
Cause tires to wear faster.
.
Make the transfer case harder to
shift, and cause it to run noisier.
{
Warning
Shifting the transfer case to
N (Neutral) can cause the vehicle
to roll even if the transmission is
in P (Park). You or someone else
could be seriously injured. Be
sure to set the parking brake
before placing the transfer case in
N (Neutral). See
Parking Brake on
page 9-42
.
{
Caution
Extended high-speed operation in
4
n
may damage or shorten the
life of the drivetrain.
Engagement noise and bump when
shifting between 4
n
and 4
m
or from
N (Neutral), with the engine running,
is normal.
Shifting into 4
n
will turn Traction
Control and StabiliTrak
®
off. See
Traction Control/Electronic Stability
Control on page 9-44
.
Two Speed Automatic
Transfer Case
Use the transfer case knob next to
the steering wheel to shift into and
out of four-wheel drive.
Indicator lights display which setting
the transfer case is in. N (Neutral) is
indicated on the knob. The indicator
lights will display briefly when the