
GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
In Brief 17Tilt and Telescoping Steering
Wheel
To adjust the tilt and telescoping
steering wheel, if equipped:
1. Push the lever (1) down to
move the steering wheel
forward or rearward. Lift the
lever up to lock the wheel in
place.
2. Pull the lever (2) toward you to
move the steering wheel up or
down, then release the lever to
lock the wheel in place.
Do not adjust the steering wheel
while driving. Throttle and Brake Pedal
Adjustment If equipped, the position of the
throttle and brake pedals can be
changed.
The switch used to adjust the
pedals is on the center stack, below
the climate controls.
Lift the switch up to move the
pedals closer to your body. Press
the switch down to move the
pedals away.
See Adjustable Throttle and Brake
Pedal 0 256 . Interior Lighting Dome Lamps
There are dome lamps in the
overhead console and the headliner,
if equipped.
To change the dome lamp settings,
press the following:
OFF : Turns the lamps off, even
when a door is open.
DOOR : The lamps come on
automatically when a door is
opened.
ON : Turns all dome lamps on. 

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
In Brief 25MENU : 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 Overview
0 188 .
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 Overview 0 188 .
Setting the Clock
See Clock 0 132 . Satellite Radio Vehicles with a SiriusXM satellite
radio tuner and a valid SiriusXM
satellite radio subscription can
receive SiriusXM programming.
SiriusXM Satellite Radio
Service SiriusXM is a satellite radio service
based in the 48 contiguous United
States and 10 Canadian provinces.
SiriusXM satellite radio has a wide
variety of programming and
commercial-free music, coast to
coast, and in digital-quality sound.
A fee is required to receive the
SiriusXM service.
For more information refer to:
.
www.siriusxm.com or call
1-888-601-6296 (U.S.).
.
www.siriusxm.ca or call
1-877-438-9677 (Canada).
See Satellite Radio 0 192 .Portable Audio Devices This vehicle may have a 3.5 mm
(1/8 in) auxiliary input jack and USB
ports in the center stack, center
console, or under armrest. There
may be a USB port in the upper
glove box. External devices such as
iPods, laptop computers, MP3
players, and USB storage devices
may be connected, depending on
the audio system.
See USB Port 0 197 and Auxiliary
Jack 0 203 .
Bluetooth The Bluetooth system allows users
with a Bluetooth-enabled cell phone
to make and receive hands-free
calls using the vehicle audio system
and controls.
The Bluetooth-enabled cell phone
must be paired with the in-vehicle
Bluetooth system before it can be
used in the vehicle. Not all phones
will support all functions. 

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
In Brief 29Vehicles with a Center Console
.
One or two in front of the
cupholders on the center
console
.
One inside the center console
.
One on the rear of the center
console
Vehicles with Bench Seats
.
One on the center stack below
the climate control system
.
One or two in the storage area
on the bench seat
Lift the cover to access and replace
when not in use.
See Power Outlets 0 133 . Universal Remote System
If equipped with the Universal
Remote system, these buttons will
be in the front overhead console.
This system provides a way to
replace up to three remote control
transmitters used to activate
devices such as garage door
openers, security systems, and
home automation devices.
See Universal Remote System
0 172 . Sunroof
If equipped, the sunroof operates
when the ignition is on or in ACC/
ACCESSORY, or when Retained
Accessory Power (RAP) is active.
See Retained Accessory Power
(RAP) 0 260 .
Slide Switch
Express-Open/Express-Close : To
express-open the sunroof, fully
press and release
I . Press the
switch again to stop the movement. 

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
124 Storage
Storage Storage Compartments Storage Compartments . . . . . . . 124
Instrument Panel Storage . . . . 124
Glove Box . . . . . . . . . . . . . . . . . . . . 124
Cupholders . . . . . . . . . . . . . . . . . . . 124
Sunglasses Storage . . . . . . . . . . 125
Center Console Storage . . . . . . 125
Floor Console Storage . . . . . . . . 126
Additional Storage Features Cargo Tie-Downs . . . . . . . . . . . . . 126 Storage
Compartments
{ WarningDo not store heavy or sharp
objects in storage compartments.
In a crash, these objects may
cause the cover to open and
could result in injury.
Instrument Panel Storage Card Holder If equipped, there is a card holder
on the front instrument panel to the
left of the steering wheel. Glove Box
To access the upper glove box,
unlock with the key and pull up on
the handle.
To access the lower glove box, pull
down on the handle.
Cupholders Front
There may be cupholders on the
center front seat console armrest. 

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
Storage 125Rear
If equipped, pull the rear seat
armrest down to access the
cupholders. Sunglasses Storage
If equipped, sunglasses storage is
on the overhead console. Press the
fixed button on the cover and
release to access. Center Console Storage
Press the latch and lift to open.
Depending on the options there may
be a tote compartment, accessory
power outlet, auxiliary jack, and
USB port(s) inside. There are
openings for power cords on the
edge of the storage area.
See Power Outlets 0 133 and the
infotainment manual. 

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
Instruments and Controls 1333. Touch the
} or
0 screen
button to go back to the
previous menu.
Power Outlets Power Outlets 12 Volt Direct
Current
Accessory power outlets can be
used to plug in electrical equipment,
such as a cell phone, MP3
player, etc.
The vehicle may have up to four
accessory power outlets.
Vehicles with a Center Console
.
One or two in front of the
cupholders on the center
console.
.
One inside the center console.
.
One on the rear of the center
console.
Vehicles with Bench Seats
.
One on the center stack below
the climate control system.
.
One or two in the storage area
on the bench seat. Lift the cover to access and replace
when not in use.
The power outlets on the center
stack and in front of the cupholders
are powered at all times. The power
outlets inside the storage area and
on the rear of the console are
powered when the ignition is in
ON/RUN or ACC/ACCESSORY,
or when RAP is active.
{ WarningPower is always supplied to the
outlets. Do not leave electrical
equipment plugged in when the
vehicle is not in use because the
vehicle could catch fire and cause
injury or death.
Caution
Leaving electrical equipment
plugged in for an extended period
of time while the vehicle is off will
drain the battery. Always unplug
(Continued) Caution (Continued) electrical equipment when not in
use and do not plug in equipment
that exceeds the maximum
15 amp rating.
Certain power accessory plugs may
not be compatible with the
accessory power outlet and could
overload vehicle or adapter fuses.
If a problem is experienced, see
your dealer.
When adding electrical equipment,
be sure to follow the proper
installation instructions included with
the equipment. See Add-On
Electrical Equipment 0 336 .
Caution
Hanging heavy equipment from
the power outlet can cause
damage not covered by the
vehicle warranty. The power
(Continued) 

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
134 Instruments and Controls Caution (Continued)outlets are designed for
accessory power plugs only, such
as cell phone charge cords.
Power Outlet 110/120 Volt
Alternating Current
Base Shown, Uplevel Similar
If equipped with this power outlet, it
can be used to plug in electrical
equipment that uses a maximum
limit of 150 watts. For vehicles with a center console,
the 110/120 volt power outlet is in
front of the cupholders in the center
console.
For vehicles with bench seats, the
110/120 volt power outlet is on the
center stack.
An indicator light on the outlet turns
on to show it is in use. The light
comes on when the ignition is in
ON/RUN, equipment requiring less
than 150 watts is plugged into the
outlet, and no system fault is
detected.
The indicator light does not come on
when the ignition is in LOCK/OFF or
if the equipment is not fully seated
into the outlet.
If equipment is connected using
more than 150 watts or a system
fault is detected, a protection circuit
shuts off the power supply and the
indicator light turns off. To reset the
circuit, unplug the item and plug it
back in or turn the Retained
Accessory Power (RAP) off and
then back on. See Retained
Accessory Power (RAP) 0 260 . The power outlet is not designed for
the following, and may not work
properly if they are plugged in:
.
Equipment with high initial peak
wattage, such as
compressor-driven refrigerators
and electric power tools.
.
Other equipment requiring an
extremely stable power supply,
such as
microcomputer-controlled
electric blankets and touch
sensor lamps.
.
Medical equipment.
Wireless Charging The vehicle may have wireless
charging on top of the center
console. See Center Console
Storage 0 125 . The system
operates at 145 kHz and wirelessly
charges one Qi compatible mobile
device. The power output of the
system is capable of charging at a
rate up to 1 amp (5W), as requested
by the compatible mobile device.
See Radio Frequency Statement
0 475 . 

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
Instruments and Controls 147passenger remains or becomes
unbuckled while the vehicle is
moving.
If the passenger seat belt is
buckled, neither the chime nor the
light comes on.
The front passenger seat belt
reminder light and chime may turn
on if an object is put on the seat
such as a briefcase, handbag,
grocery bag, laptop, or other
electronic device. To turn off the
reminder light and/or chime, remove
the object from the seat or buckle
the seat belt.
Airbag Readiness Light This light shows if there is an
electrical problem with the airbag
system. The system check includes
the airbag sensor(s), passenger
sensing system (if equipped), the
pretensioners, the airbag modules,
the wiring, and the crash sensing
and diagnostic module. For more
information on the airbag system,
see Airbag System 0 77 . The airbag readiness light comes on
for several seconds when the
vehicle is started. If the light does
not come on then, have it fixed
immediately.
{ WarningIf the airbag readiness light stays
on after the vehicle is started or
comes on while driving, it means
the airbag system might not be
working properly. The airbags in
the vehicle might not inflate in a
crash, or they could even inflate
without a crash. To help avoid
injury, have the vehicle serviced
right away.
If there is a problem with the airbag
system, a Driver Information Center
(DIC) message may also come on. Airbag On-Off Light If the vehicle has an airbag on-off
switch, it also has a passenger
airbag status indicator located in the
overhead console.
United States
Canada and Mexico
When the vehicle is started, the
passenger airbag status indicator
ON and OFF, or the symbol for on
and off, will light for several seconds
as a system check. Then, after
several more seconds, the status
indicator ON or OFF, or either the