
GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 4/18/17
Lighting 183change. This causes the turn
signals to automatically flash three
times. It will flash six times if Tow/
Haul Mode is active. Holding the
turn signal lever for more than
one second will cause the turn
signals to flash until the lever is
released.
The lever returns to its starting
position whenever it is released.
If after signaling a turn or a lane
change the arrows flash rapidly or
do not come on, a signal bulb could
be burned out. If equipped with LED
turn signals, see your dealer.
Replace any burned out bulbs. If a
bulb is not burned out, check the
fuse. See Fuses 0 393 .
Turn Signal On Chime
If the turn signal is left on for more
than 1.2 km (0.75 mi), a chime
sounds at each flash of the turn
signal. The message TURN
SIGNAL ON will also appear in the
Driver Information Center (DIC). To
turn the chime and message off,
move the turn signal lever to the off
position. Fog Lamps
If equipped, the control is on the
center of the exterior lamp control,
to the left of the steering column.
The ignition must be in the ON/RUN
position for the fog lamps to
come on.
# (Fog Lamps) : Press to turn the
fog lamps on or off. A light will come
on in the instrument cluster.
When the fog lamps are turned on,
the parking lamps automatically
turn on.
When the headlamps are changed
to high beam, the fog lamps go off.
When the high-beam headlamps are
turned off, the fog lamps will come
on again. Some localities have laws that
require the headlamps to be on with
the fog lamps.
Auxiliary
Roof-Mounted Lamp If equipped, this button includes
wiring provisions for a dealer or a
qualified service center to install an
auxiliary roof lamp.
This button is on the overhead
console.
When the wiring is connected to an
auxiliary roof-mounted lamp,
pressing the bottom of the button
will activate the lamp and illuminate
an indicator light at the bottom of

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 4/18/17
206 Infotainment System Root Directory
The root directory is treated as a
folder. All files contained directly
under the root directory are
accessed prior to any root directory
folders.
Empty Folders
If a root directory or folder is empty
or contains only folders, the player
advances to the next folder in the
file structure that contains a
compressed audio file. The empty
folder(s) are not displayed or
numbered.
No Folder
When the CD only contains
compressed audio files without any
folders, all files are under the root
folder.
USB Port (Base Radio) Playing from a USB
A USB mass storage device or
Media Transfer Protocol (MTP)
device can be connected to the
USB port. The vehicle may have USB ports in
the front of the center console,
armrest, or one in the upper glove
box.
See Center Console Storage 0 120
and Glove Box 0 119 .
USB MP3 Player and USB Drives
.
The USB MP3 players and USB
drives connected must comply
with the USB Mass Storage
Class specification (USB MSC).
.
Hard disk drives are not
supported.
.
Supported file system is FAT32.
To play a USB device:
.
Connect the USB.
.
Press MEDIA on the faceplate
until the connected device is
shown.
While the USB source is active,
press the corresponding faceplate
button for the icons on the screen to
operate USB function:
.
t .
u .
j /
r .
Z For information on how to use the
screen icons, see “ Playing an
Audio CD. ”
USB Menu
Press MENU to display the USB
menu and the following may display:
Browse : Select to display the files
and folders on the USB device.
Tone Settings : Select to adjust
Bass, Midrange, Treble, Balance,
Fade, and EQ (Equalizer). See
“ Tone Settings ” in AM-FM Radio
(Base Radio with Touchscreen)
0 199 or AM-FM Radio (Base
Radio) 0 197 .
Auto Volume : If equipped, see
“ Auto Volume ” in AM-FM Radio
(Base Radio with Touchscreen)
0 199 or AM-FM Radio (Base
Radio) 0 197 .
EQ (Equalizer) : If equipped, this
feature adjusts the equalizer
settings. See “ EQ (Equalizer)

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 4/18/17
Infotainment System 207Settings ” in AM-FM Radio (Base
Radio with Touchscreen) 0 199 or
AM-FM Radio (Base Radio) 0 197 .
Playing from an iPod ®
/iPad ®
/
iPhone ®
This feature supports the following
devices:
.
iPod nano ®
(1st, 2nd, 3rd, and
4th generation)
.
iPod with video (5.0 and 5.5
generation)
.
iPod classic ®
(6th generation)
.
iPod touch ®
(1st and 2nd
generation)
.
iPad
.
iPhone 3G, iPhone 3GS,
iPhone 4
There may be problems with
operation and function in the
following situations:
.
When connecting a device with
a more recent version of the
firmware installed than is
supported by the infotainment
system. .
When connecting a device on
which firmware from other
providers is installed.
To connect and control a device:
1. Connect one end of the
standard USB cable to the
device's dock connector.
2. Connect the other end to a
USB port in the center console.
See Center Console Storage
0 120 .
3. Press MEDIA to select the
source.
The music information displays on
the radio ’ s display and begins
playing through the vehicle ’ s audio
system.
The device battery recharges
automatically while the vehicle is on.
When the vehicle is off while a
device is connected using the USB
cable, the device battery stops
charging and the device will
automatically turn off. If the device is an unsupported
model, it can still be listened to in
the vehicle by connecting to the
auxiliary input jack using a standard
3.5 mm (1/8 in) stereo cable.
Menu
Press MENU to display the device
Menu and the following may display:
Browse : Select to display the files
or songs on the device. See
“ Browse Device Media ” later in this
section.
Tone Settings : Select to adjust
Bass, Midrange, Treble, Balance,
Fade, and EQ (Equalizer). See
“ Tone Settings ” in AM-FM Radio
(Base Radio with Touchscreen)
0 199 or AM-FM Radio (Base
Radio) 0 197 .
Auto Volume : If equipped, see
“ Auto Volume ” in AM-FM Radio
(Base Radio with Touchscreen)
0 199 or AM-FM Radio (Base
Radio) 0 197 .

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 4/18/17
Infotainment System 209USB Support
If equipped, there are USB ports is
in the center stack below the climate
controls, in the glove box, in the
center console under the armrest,
and at the rear of the center
console. All ports use the USB 2.0
standard.
USB Supported Devices
.
USB Flash Drives
.
Portable USB Hard Drives
Not all iPods and USB drives are
compatible with the USB port.
Make sure the iPod has the latest
firmware from Apple for proper
operation. iPod firmware can be
updated using the latest iTunes
application. See www.apple.com/
itunes.
For help with identifying your iPod,
go to www.apple.com/support.
The USB port can play both lower
and upper case .mp3, .wma, .ogg,
and .wav files stored on a USB
storage device. Supported Apple Devices
To view supported devices in U.S.,
see www.my.gmc.com\learn.
To view supported devices in
Canada, see www.gmcowner.ca.
To view supported devices in
Mexico, see your dealer.
USB Supported File and Folder
Structure
The infotainment system supports:
.
FAT16.
.
FAT32.
.
exFAT.
Connecting a USB Storage
Device or iPod/iPhone To connect a USB storage device,
connect the device to the USB port.
To connect an iPod/iPhone, connect
one end of the device ’ s cable to the
iPod/iPhone and the other end to
the USB port.
The iPod/iPhone charges while it is
connected to the vehicle if the
vehicle is on or in ACC/ ACCESSORY. See Ignition
Positions 0 274 . When the vehicle is
turned off, the iPod/iPhone
automatically powers off and will not
charge or draw power from the
vehicle's battery.
For more information on USB
usage, see “ Audio System
Information ” following.
Audio System Information The infotainment system can play
the music files contained in the USB
storage device or iPod/iPhone
products.
Using MP3/WMA/OGG/WAV Files
.
Music files with .mp3, .wma,
.ogg, and .wav file name
extensions can be played.
.
MP3 files that can be played: Bit
rate: 8 kbps to 320 kbps.
Sampling frequency: 48 kHz,
44.1 kHz, 32 kHz, 24 kHz, 22.05
kHz, and 16 kHz.
.
Files with a bit rate above
128 kbps will result in higher
quality sound.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 4/18/17
214 Infotainment System .
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
z from the picture
screen.
2. Touch the screen to cancel the
slide show during the slide
show playback. Viewing a Previous or Next
Picture
Touch
S or
T from the picture
screen.
Rotating a Picture
Touch
w from the picture screen.
Enlarging a Picture
Touch
x from 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
0 to exit. Auxiliary Jack This vehicle may have an AUX jack
in the center console or armrest.
See Center Console Storage 0 120 .
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.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 4/18/17
Driving and Operating 277To control the fast idle:
.
To enable the Fast Idle System,
press and release the cruise
control on/off button and ensure
that the switch indicator light
is lit.
.
Press and release the cruise
control SET- button. Engine
speed will be held at
approximately 1200 rpm.
One of the following actions will turn
off the fast idle:
.
Pressing the brake.
.
Selecting the cruise control
cancel button.
.
Releasing the parking brake.
.
Moving the transmission shift
lever out of P (Park) or
N (Neutral).
.
Selecting the cruise control on/
off button when it was
previously on.
.
Pressing the cruise control SET-
button a second time. .
Pressing the accelerator more
than one-quarter of the
way down.
.
Turning the ignition off.
Retained Accessory
Power (RAP) The following vehicle accessories
can be used for up to 10 minutes
after the engine is turned off:
.
Audio System
.
Power Windows
.
OnStar System (if equipped)
.
Sunroof (if equipped)
These features work when the key
is in ON/RUN or ACC/
ACCESSORY. Once the key is
turned from ON/RUN to LOCK/OFF,
the windows and sunroof continue
to work up to 10 minutes or until any
door is opened. The radio continues
to work for up to 10 minutes or until
the driver door is opened. Accessory Power Outlets (APOs)
The vehicle may have Accessory
Power Outlets (APOs) in several
locations. See Power Outlets 0 128 .
The APOs in the console or center
seat position are powered by
Retained Accessory Power (RAP).
They will continue to work for up to
10 minutes after the key is turned
from ON/RUN to LOCK/OFF, or until
the driver door is opened.
The APOs on the center stack come
from the factory powered directly
from the vehicle battery, and supply
accessory power at all times,
regardless of ignition key position.
If electronic items are left plugged
into these APOs for long periods of
time with the vehicle off, the vehicle
battery could be drained. The
vehicle may not start if the battery is
allowed to drain for an extended
period of time.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 4/18/17
500 Index California (cont'd)
Perchlorate Materials
Requirements . . . . . . . . . . . . . . . 357
California
Proposition
65 Warning . . . . . . . . . .357, 383, 435
Canadian Vehicle Owners . . . . . . . . 2
Capacities and
Specifications . . . . . . . . . . . . . . . . . 470
Carbon Monoxide
Engine Exhaust . . . . . . . . . . . . . . . 282
Tailgate . . . . . . . . . . . . . . . . . . . . . . . . . 41
Winter Driving . . . . . . . . . . . . . . . . 263
Cargo
Tie-Downs . . . . . . . . . . . . . . . . . . . . 121
Cargo Lamp . . . . . . . . . . . . . . . . . . . . 184
Caution, Danger, and Warning . . . . 3
CD Player . . . . . . . . . . . . . . . . . . . . . . 203
Center Console Storage . . . . . . . . 120
Center High-Mounted
Stoplamp (CHMSL) and
Cargo Lamp . . . . . . . . . . . . . . . . . . . 391
Center Seat . . . . . . . . . . . . . . . . . . . . . 57
Chains, Tire . . . . . . . . . . . . . . . . . . . . 422
Charging
Wireless . . . . . . . . . . . . . . . . . . . . . . 130
Charging System Light . . . . . . . . . 143 Check
Engine Light (Malfunction
Indicator) . . . . . . . . . . . . . . . . . . . . 144
Ignition Transmission Lock . . . 388
Child Restraints
Infants and Young Children . . . . . 89
Lower Anchors and Tethers
for Children . . . . . . . . . . . . . . . . . . . 95
Older Children . . . . . . . . . . . . . . . . . . 87
Securing . . . . . . . . . . . . . . . . . 106, 110
Systems . . . . . . . . . . . . . . . . . . . . . . . . 91
Cleaning
Exterior Care . . . . . . . . . . . . . . . . . 444
Interior Care . . . . . . . . . . . . . . . . . . 449
Climate Control
Systems . . . . . . . . . . . . . . . . . 243, 245
Air Conditioning . . . . . . . . . 243, 245
Dual Automatic . . . . . . . . . . . . . . . 246
Heating . . . . . . . . . . . . . . . . . . 243, 245
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
Cluster, Instrument . . . . . . . . . . . . . 132
Collision Damage Repair . . . . . . . 481
Compartments
Storage . . . . . . . . . . . . . . . . . . . . . . . .119
Compass . . . . . . . . . . . . . . . . . . . . . . . 126
Messages . . . . . . . . . . . . . . . . . . . . 158
Connections
OnStar ®
. . . . . . . . . . . . . . . . . . . . . . 491 Control . . . . . . . . . . . . . . . . . . . . . . . . . 301
Traction and Electronic
Stability . . . . . . . . . . . . . . . . . . . . . 299
Control Light
Hill Descent . . . . . . . . . . . . . . . . . . 147
Control of a Vehicle . . . . . . . . . . . . . 254
Convex Mirrors . . . . . . . . . . . . . . . . . . 46
Coolant
Engine . . . . . . . . . . . . . . . . . . . . . . . . 374
Engine Temperature Gauge . . 138
Engine Temperature
Warning Light . . . . . . . . . . . . . . . 149
Cooling . . . . . . . . . . . . . . .243, 245, 246
Cooling System . . . . . . . . . . . . . . . . . 372
Engine Messages . . . . . . . . . . . . 159
Courtesy Transportation
Program . . . . . . . . . . . . . . . . . . . . . . . 480
Cruise Control . . . . . . . . . . . . . . . . . . 302
Light . . . . . . . . . . . . . . . . . . . . . . . . . . 152
Cupholders . . . . . . . . . . . . . . . . . . . . . 119
Customer Assistance . . . . . . . . . . . 477
Offices . . . . . . . . . . . . . . . . . . . . . . . . 476
Text Telephone (TTY)
Users . . . . . . . . . . . . . . . . . . . . . . . 477
Customer Information
Service Publications
Ordering Information . . . . . . . . 483

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 4/18/17
508 Index Service (cont'd)
Climate Control
System . . . . . . . . . . . . . . . . . 243, 245
Doing Your Own Work . . . . . . . . 358
Maintenance Records . . . . . . . . 468
Maintenance, General
Information . . . . . . . . . . . . . . . . . . 454
Parts Identification Label . . . . . 469
Publications Ordering
Information . . . . . . . . . . . . . . . . . . 483
Scheduling Appointments . . . . . 480
Services
Special Application . . . . . . . . . . . 461
Servicing the Airbag . . . . . . . . . . . . . 85
Shift Lock Control Function
Check, Automatic
Transmission . . . . . . . . . . . . . . . . . . 387
Shifting
Into Park . . . . . . . . . . . . . . . . . . . . . . 279
Out of Park . . . . . . . . . . . . . . . . . . . 280
Signals, Turn and
Lane-Change . . . . . . . . . . . . . . . . . 182
Snow Plow . . . . . . . . . . . . . . . . . . . . . 350
Software Updates . . . . . . . . . . . . . . 197
Special Application Services . . . . 461
Specifications and
Capacities . . . . . . . . . . . . . . . . . . . . . 470
Speedometer . . . . . . . . . . . . . . . . . . . 136 StabiliTrak
OFF Light . . . . . . . . . . . . . . . . . . . . . 148
Start Assist, Hill . . . . . . . . . . . . . . . . . 298
Start Vehicle, Remote . . . . . . . . . . . 38
Starter Switch Check . . . . . . . . . . . 387
Starting the Engine . . . . . . . . . . . . . 275
Steering . . . . . . . . . . . . . . . . . . . . . . . . 255
Fluid, Power . . . . . . . . . . . . . . . . . . 379
Heated Wheel . . . . . . . . . . . . . . . . 125
Wheel Adjustment . . . . . . . . . . . . 124
Wheel Controls . . . . . . . . . . . . . . . 125
Steering System Messages . . . . . 163
Steps
Power Assist . . . . . . . . . . . . . . . . . . . 42
Stoplamps and Back-up Lamps
Bulb Replacement . . . . . . . . . . . . 390
Storage Areas
Center Console . . . . . . . . . . . . . . . 120
Floor Console . . . . . . . . . . . . . . . . 121
Glove Box . . . . . . . . . . . . . . . . . . . . .119
Instrument Panel . . . . . . . . . . . . . .119
Sunglasses . . . . . . . . . . . . . . . . . . . 120
Storage Compartments . . . . . . . . . 119
Stuck Vehicle . . . . . . . . . . . . . . . . . . . 264
Sun Visors . . . . . . . . . . . . . . . . . . . . . . . 53
Sunglass Storage . . . . . . . . . . . . . . . 120
Sunroof . . . . . . . . . . . . . . . . . . . . . . . . . . 53 Switches
Airbag On-Off . . . . . . . . . . . . . . . . . . . 79
Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . 3
System
Forward Collision
Alert (FCA) . . . . . . . . . . . . . . . . . . 308
Infotainment . . . . . . . . . . . . . 188, 487
Noise Control . . . . . . . . . . . . . . . . . 386
Systems
Driver Assistance . . . . . . . . . . . . . 305
T Tachometer . . . . . . . . . . . . . . . . . . . . . 136
Tailgate . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Taillamps
Bulb Replacement . . . . . . . . . . . . 390
Text Telephone (TTY) Users . . . . 477
Theft-Deterrent Systems . . . . . . . . . 45
Immobilizer . . . . . . . . . . . . . . . . . . . . . 45
Throttle, Adjustable . . . . . . . . . . . . . 273
Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . 400
All-Season . . . . . . . . . . . . . . . . . . . . 401
All-Terrain . . . . . . . . . . . . . . . . . . . . 402
Buying New Tires . . . . . . . . . . . . . 418
Chains . . . . . . . . . . . . . . . . . . . . . . . . 422
Changing . . . . . . . . . . . . . . . . . . . . . 425
Designations . . . . . . . . . . . . . . . . . 405
Different Size . . . . . . . . . . . . . . . . . 419