
GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
202 Infotainment System
.Touchgwithin two seconds of
the playback time to play the
previous file.
Returning to the Beginning of the
Current File
Touch
gafter two seconds of the
playback time.
Scanning Forward or Backward
Touch and hold
gorlduring
playback to rewind or fast forward.
Release the button to resume
playback at normal speed.
Playing a File Randomly
Touch
Zduring playback.
. ON: Plays all files randomly.
. OFF: Returns to normal
playback.
Using the iPod Menu
. Touch Menu during playback.
. Touch the appropriate
play mode.
Browse Music 1. Touch Browse Music. 2. Touch the desired music.
Tone Settings
. Touch Tone Settings. The Tone
Settings menu is displayed. See
“Tone Settings” inAM-FM Radio
0 190.
Auto Volume
. Touch Auto Volume. The Auto
Volume menu is displayed. See
“Auto Volume” inAM-FM Radio
0 190.
Picture System Information
The infotainment system can view
picture files stored on a USB
storage device and devices that
support Media Transfer
Protocol (MTP).
.
Supported file extensions: .jpg,
.bmp, .png, .gif.
. Animated GIF files are not
supported.
. Some files may not operate due
to a different recording format or
the condition of the file. Viewing Pictures
1. Connect the USB device to the USB port.
2. Touch the screen to open to full screen. Touch the screen again
to return to the previous
screen.
If the USB device is already
connected:
1. Press
{.
2. Touch GALLERY.
Some features are disabled while
the vehicle is in motion.
Viewing a Slide Show
1. Touch
zfrom the picture
screen.
2. Touch the screen to cancel the slide show during the slide
show playback.
Viewing a Previous or Next
Picture
Touch
SorTfrom the picture
screen.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
Infotainment System 203
Rotating a Picture
Touch
wfrom the picture screen.
Enlarging a Picture
Touch
xfrom the picture screen.
Using the USB Picture Menu 1. Touch MENU from the picture screen.
2. Touch the appropriate menu: .Slide Show Time: Allows
selection of the slide show
interval.
. Clock, Temp. Display:
Allows selection of On or
Off to show the clock and
temperature on the full
screen.
. Display Settings: Adjusts
for Brightness and Contrast.
3. Touch
0to exit.
Auxiliary Jack
This vehicle may have an AUX jack
in the center console or armrest.
See Center Console Storage 0125. Possible auxiliary audio sources
include:
.
Laptop computer
. Audio music player
This jack is not an audio output. Do
not plug headphones into the
auxiliary input jack. Auxiliary
devices should be set up while the
vehicle is in P (Park).
Connect a 3.5 mm (1/8 in) cable
from the auxiliary device to the
auxiliary input jack.
If an auxiliary device has already
been connected, but a different
source is currently active, press the
MEDIA faceplate button repeatedly
to scroll through all of the available
audio source screens, until the AUX
source screen is shown.
Base Radio
Playing from the AUX Jack
An auxiliary device is played
through the audio system and
controlled through the device itself. AUX Menu
Press the MENU knob to display the
AUX menu and the following may
display:
Tone Settings :
Select to adjust
Bass, Midrange, Treble, Balance,
Fade, and EQ (Equalizer). See
“Tone Settings” inAM-FM Radio
0 190.
Auto Volume : If equipped, see
“Playing an Audio CD.”
DSP : If equipped, this feature
adjusts the pre-defined settings.
See “DSP” inAM-FM Radio 0190.
EQ (Equalizer) : If equipped, this
feature adjusts the pre-defined
equalizer settings. See “EQ
(Equalizer)” inAM-FM Radio 0190.
Base Radio with Touchscreen
Play will begin when the system has
finished reading the information on
the device.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
204 Infotainment System
Playing Music
To play the music from the device,
if the device is already connected:1. Press
{.
2. Touch AUDIO.
3. Touch Source.
4. Touch AUX.
To adjust the tone settings. See
“Audio Settings” in“System
Settings” underAM-FM Radio
0 190.
Bluetooth Audio
If equipped, music may be played
from a paired Bluetooth device. See
“Pairing” underBluetooth
(Overview) 0211 orBluetooth
(Infotainment Controls) 0213 for
help pairing a device.
Volume and song selection may be
controlled by using the infotainment
controls or the phone/device.
If Bluetooth Audio is selected and
nothing is heard, check the volume
setting on both the phone/device
and the infotainment system. Launch music by touching MEDIA
on the Home Page.
To play music via Bluetooth:
1. Power on the device, and pair to connect the device.
2. Once paired, go into the audio application from the Home
Page or via the application tray.
Select MEDIA until Bluetooth
displays.
Bluetooth Audio Menu
Press the MENU screen button to
display the Bluetooth Audio menu.
The following may be available:
Tone: Turn the MENU knob to
adjust the tone settings.
Press
oBACK to go back to the
previous menu.
Manage Bluetooth Devices: Select
to go to the Bluetooth page to add
or delete devices.
When selecting Bluetooth Audio, the
radio may not be able to launch the
audio player on the connected device to start playing. When the
vehicle is not moving, use the
phone to begin playback.
All devices launch audio differently.
When selecting Bluetooth Audio as
a source, the radio may show as
paused on the screen. Press play
on the device or press
rto begin
playback.
Some phones support sending
Bluetooth music information to
display on the radio. When the radio
receives this information, it will
check to see if any is available and
display it. For more information
about supported Bluetooth features,
see www.gm.com/bluetooth for U.S.
and Canada only.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
Driving and Operating 235
Filling a Portable FuelContainer . . . . . . . . . . . . . . . . . . . 303
Trailer Towing
General TowingInformation . . . . . . . . . . . . . . . . . . 303
Driving Characteristics and Towing Tips . . . . . . . . . . . . . . . . . 303
Trailer Towing . . . . . . . . . . . . . . . . 307
Towing Equipment . . . . . . . . . . . . 325
Trailer Sway Control (TSC) . . . 334
Conversions and Add-Ons
Add-On Electrical Equipment . . . . . . . . . . . . . . . . . . 336
Adding a Snow Plow or Similar Equipment . . . . . . . . . . . . . . . . . . 337
Pickup Conversion to Chassis Cab . . . . . . . . . . . . . . . . 340
Driving Information
Distracted Driving
Distraction comes in many forms
and can take your focus from the
task of driving. Exercise good
judgment and do not let other
activities divert your attention away
from the road. Many local
governments have enacted laws
regarding driver distraction. Become
familiar with the local laws in
your area.
To avoid distracted driving, keep
your eyes on the road, keep your
hands on the steering wheel, and
focus your attention on driving.
. Do not use a phone in
demanding driving situations.
Use a hands-free method to
place or receive necessary
phone calls.
. Watch the road. Do not read,
take notes, or look up
information on phones or other
electronic devices. .
Designate a front seat
passenger to handle potential
distractions.
. Become familiar with vehicle
features before driving, such as
programming favorite radio
stations and adjusting climate
control and seat settings.
Program all trip information into
any navigation device prior to
driving.
. Wait until the vehicle is parked
to retrieve items that have fallen
to the floor.
. Stop or park the vehicle to tend
to children.
. Keep pets in an appropriate
carrier or restraint.
. Avoid stressful conversations
while driving, whether with a
passenger or on a cell phone.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
Driving and Operating 257
This position locks the ignition and
steering wheel. It also locks the
transmission. The key can be
removed in LOCK/OFF.
The steering can bind with the
wheels turned off center. If this
happens, move the steering wheel
from right to left while turning the
key to ACC/ACCESSORY. If this
does not work, then the vehicle
needs service.
Do not turn the engine off when the
vehicle is moving. This may cause a
loss of power assist in the brake
and steering systems and disable
the airbags.
If the vehicle must be shut off in an
emergency:1. Brake using a firm and steady pressure. Do not pump the
brakes repeatedly. This may
deplete power assist, requiring
increased brake pedal force.
2. Shift the vehicle to N (Neutral). This can be done while the
vehicle is moving. After shifting to N (Neutral), firmly apply the
brakes and steer the vehicle to
a safe location.
3. Come to a complete stop. Shift to P (Park). Turn the ignition to
LOCK/OFF.
4. Set the parking brake. See Parking Brake 0281.
The shift lever must be in P (Park)
to turn the ignition switch to
LOCK/OFF.
{Warning
Turning off the vehicle while
moving may cause loss of power
assist in the brake and steering
systems and disable the airbags.
While driving, only shut the
vehicle off in an emergency.
If the vehicle cannot be pulled over,
and must be shut off while driving,
turn the ignition to ACC/
ACCESSORY.
Caution
Using a tool to force the key to
turn in the ignition could cause
damage to the switch or break the
key. Use the correct key, make
sure it is all the way in, and turn it
only with your hand. If the key
cannot be turned by hand, see
your dealer.
1 (ACC/ACCESSORY) : This
position lets things like the radio
and the windshield wipers operate
while the engine is off. It also
unlocks the steering wheel. Use this
position if the vehicle must be
pushed or towed.
2 (ON/RUN) : This position can be
used to operate the electrical
accessories and to display some
instrument cluster warning and
indicator lights. This position can
also be used for service and
diagnostics, and to verify the proper
operation of the malfunction
indicator lamp as may be required
for emission inspection purposes.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
Vehicle Care 399
inflation pressure is high, press
on the metal stem in the center
of the tire valve to release air.
Re-check the tire pressure with
the tire gauge.
Put the valve caps back on the
valve stems to keep out dirt and
moisture and prevent leaks. Use
only valve caps designed for the
vehicle by GM. TPMS sensors
could be damaged and would
not be covered by the vehicle
warranty.
Tire Pressure for
High-Speed Operation
{Warning
Driving at high speeds, 160 km/h
(100 mph) or higher, puts
additional strain on tires.
Sustained high-speed driving
causes excessive heat buildup
and can cause sudden tire failure.(Continued)
Warning (Continued)
This could cause a crash, and
you or others could be killed.
Some high-speed rated tires
require inflation pressure
adjustment for high-speed
operation. When speed limits and
road conditions allow the vehicle
to be driven at high speeds, make
sure the tires are rated for
high-speed operation, are in
excellent condition, and are set to
the correct cold tire inflation
pressure for the vehicle load.
Vehicles with P275/55R20 or
P285/50R20 size tires require
inflation pressure adjustment when
driving the vehicle at speeds of
160 km/h (100 mph) or higher. Set
the cold tire inflation pressure to
20 kPa (3 psi) above the
recommended cold tire pressure
shown on the Tire and Loading
Information label. Return the tires to the
recommended cold tire inflation
pressure when high-speed driving
has ended. See
Vehicle Load Limits
0 248 andTire Pressure 0397.
Tire Pressure Monitor
System
The Tire Pressure Monitor System
(TPMS) uses radio and sensor
technology to check tire pressure
levels. The TPMS sensors monitor
the air pressure in your tires and
transmit tire pressure readings to a
receiver located in the vehicle.
Each tire, including the spare (if
provided), should be checked
monthly when cold and inflated to
the inflation pressure recommended
by the vehicle manufacturer on the
vehicle placard or tire inflation
pressure label. (If your vehicle has
tires of a different size than the size
indicated on the vehicle placard or
tire inflation pressure label, you
should determine the proper tire
inflation pressure for those tires.)

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
402 Vehicle Care
TPMS sensor. The malfunction
light and the DIC message
should go off after the road tire
is replaced and the sensor
matching process is performed
successfully. See "TPMS Sensor
Matching Process" later in this
section.
. The TPMS sensor matching
process was not done or not
completed successfully after
rotating the tires. The
malfunction light and the DIC
message should go off after
successfully completing the
sensor matching process. See
"TPMS Sensor Matching
Process" later in this section.
. One or more TPMS sensors are
missing or damaged. The
malfunction light and the DIC
message should go off when the
TPMS sensors are installed and
the sensor matching process is
performed successfully. See
your dealer for service.
. Replacement tires or wheels do
not match the original equipment
tires or wheels. Tires and wheels other than those recommended
could prevent the TPMS from
functioning properly. See
Buying
New Tires 0408.
. Operating electronic devices or
being near facilities using radio
wave frequencies similar to the
TPMS could cause the TPMS
sensors to malfunction.
If the TPMS is not functioning
properly, it cannot detect or signal a
low tire pressure condition. See
your dealer for service if the TPMS
malfunction light and DIC message
come on and stay on.
Tire Fill Alert (If Equipped)
This feature provides visual and
audible alerts outside the vehicle to
help when inflating an underinflated
tire to the recommended cold tire
pressure.
When the low tire pressure warning
light comes on: 1. Park the vehicle in a safe, level place.
2. Set the parking brake firmly. 3. Place the vehicle in P (Park).
4. Add air to the tire that is
underinflated. The turn signal
lamp will flash.
When the recommended
pressure is reached, the horn
sounds once and the turn
signal lamp will stop flashing
and briefly turn solid.
Repeat these steps for all
underinflated tires that have
illuminated the low tire pressure
warning light.
If the tire is overinflated by more
than 35 kPa (5 psi), the horn will
sound multiple times and the turn
signal lamp will continue to flash for
eight seconds after filling stops. To
release and correct the pressure,
while the turn signal lamp is still
flashing, briefly press the center of
the valve stem. When the
recommended pressure is reached,
the horn sounds once.
If the turn signal lamp does not flash
within 15 seconds after starting to
inflate the tire, the tire fill alert has
not been activated or is not working.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
Vehicle Care 427
may not be able to get enough
power from a single battery in
another vehicle to start your
diesel engine. If your vehicle
has more than one battery,
using the battery that is closer
to the starter will reduce
electrical resistance. This is
located on the passenger side,
in the rear of the engine
compartment.
3. Get the vehicles close enough so the jumper cables can
reach, but be sure the vehicles
are not touching each other.
If they are, it could cause an
unwanted ground connection.
You would not be able to start
your vehicle, and the bad
grounding could damage the
electrical systems.
To avoid the possibility of the
vehicles rolling, set the parking
brake firmly on both vehicles
involved in the jump start
procedure. Put the automatic
transmission in P (Park) or a
manual transmission in Neutral
before setting the parking brake. If you have a
four-wheel-drive vehicle, be
sure the transfer case is in a
drive gear, not in N (Neutral).
Caution
If any accessories are left on or
plugged in during the jump
starting procedure, they could be
damaged. The repairs would not
be covered by the vehicle
warranty. Whenever possible, turn
off or unplug all accessories on
either vehicle when jump starting.
4. Turn the ignition off on both vehicles. Unplug unnecessary
accessories plugged into the
accessory power outlets. Turn
off the radio and all the lamps
that are not needed. This will
avoid sparks and help save
both batteries. And it could
save the radio! 5. Open the hood on the other
vehicle and locate the
positive (+) and negative (−)
terminal locations on that
vehicle.
The positive (+) terminal is
under a red plastic cover at the
positive battery post. To
uncover the positive (+)
terminal, open the red plastic
cover.
For more information on the
location of the remote
positive (+) and remote
negative (−) terminals, see
Engine Compartment Overview
0345.
{Warning
An electric fan can start up even
when the engine is not running
and can injure you. Keep hands,
clothing, and tools away from any
underhood electric fan.