GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - crc - 5/11/17
In Brief
23
AUTO mode only the rear wheels
will hold the vehicle from sliding
when parked. If parking on a steep
grade, use 4
m
to keep all four
wheels engaged.
4
m
(Four-Wheel Drive High) :
Use
this setting when extra traction is
needed, such as on snowy or icy
roads or in most off-road situations.
N (Neutral) :
Shift to this setting
only when towing the vehicle.
See
or
4
n
(Four-Wheel Drive Low) :
This
setting sends maximum power to all
four wheels. Choose 4
n
when
driving in deep sand, mud, or snow,
and while climbing or descending
steep hills.
See
Vehicle Features
Infotainment System
The base radio and base radio with
touchscreen information is included
in this manual. See the infotainment
manual for information on the
uplevel radios, audio players,
phone, navigation system, Rear
Seat Entertainment (RSE), and
voice or speech recognition,
if equipped.
Radio(s)
Base Radio
O
:
Press to turn the system on.
Press and hold to turn it off. When
on, press to mute; press again to
unmute. Turn to increase or
decrease the volume.
RADIO :
Press to choose between
FM, AM, and SiriusXM, if equipped.
MEDIA :
Press to change the audio
source between CD, USB, AUX,
and Bluetooth Audio, if equipped.
{
:
Press to go to the Home Page.
MENU :
Press to select a menu.
g
:
Press to seek the previous
station or track.
l
:
Press to seek the next station
or track.
See
“
Base Radio
”
in
.
Base Radio with Touchscreen
O
:
Press to turn the system on.
Press and hold to turn it off. When
on, press to mute; press again to
unmute. Turn to increase or
decrease the volume.
{
:
Press to go to the Home Page.
7
:
Press to seek the previous
station or track.
6
:
Press to seek the next station
or track.
See
“
Base Radio with Touchscreen
”
in
.
Setting the Clock
See
