GMC Sierra 2016 Assembly instructions

1
Review this Quick Reference Guide for an overview of some
important features in your GMC Sierra. More detailed information
can be found in your Owner Manual. Some optional equipment
described in this guide may not be included in your vehicle. For
easy reference, keep this guide with your Owner Manual in your
glove box.
www.gmc.com
2016 Sierra
Getting to Know Your

2
Instrument Panel
Audio Next/
Previous Favorite
Station Controls
(behind steering
wheel)
Cruise Control/
Collision Alert
F
/
Heated Steering
Wheel
F
Buttons
Power Mirror
Control
F
/Door
Lock Switch/
Window Buttons
Voice
Recognition
Buttons/Driver
Information
Center
Controls
Audio
Volume
Controls
(behind
steering
wheel)
Tilt
Steering
Wheel
Lever
Telescoping
Steering
Wheel
Control
F
Memory
Seat
Controls
F
4WD
Control
F
Instrument Panel
Illumination Control/
Exterior Lamp Control Tow/Haul
Button
Driver
Information
Center
Turn Signal/
Windshield
Wipers Lever
Integrated
Trailer Brake
Control
F
Low Fuel
Traction Control Off
Brake System
Cruise Control Set
StabiliTrak Active
StabiliTrak Off
Security
Tow/Haul Mode
Hill Descent Control
Diesel Exhaust Brake
(diesel models only)
Lights On Reminder
Airbag Readiness
Symbols

3
Refer to your Owner Manual to
learn about the information being
relayed by the lights, gauges and
indicators on the instrument
cluster.
See In Brief in your Owner Manual.
Driver’s Heated/
Vented Seat
ButtonsF
Infotainment
System (8-inch*
screen shownF)
Passenger’s
Heated/Vented
Seat ButtonsF
Climate
ControlsF
Accessory
Power
OutletsF
Adjustable Pedals
Switch
F
/Traction Control
and StabiliTrak Button/
Cargo Box Lamp Button
110V
Outlet
F
USB
PortsF
USB Port
F
(in glove box; SLE
and SLT bench seat
models only)
Check Engine
Antilock Brake
System
Low Tire Pressure
(single rear wheel
models only)
Door Ajar
Oil Pressure
Charging System
Safety Belt Reminder
F Optional equipment *Screen measured diagonally
Front and Rear Parking Assist
F
/
Lane Keep Assist
F
(LD models)/Lane
Departure Warning
F
(HD models)/
Hill Descent Control
F
/Diesel Exhaust
Brake (if equipped) Buttons
Note: Gasoline model shown.

4F
Optional equipment
Remote Keyless Entry Transmitter (Key Fob)F
Door Locks
Power MirrorsF
Door Locks
To lock or unlock all doors, press the power door Lock/ Unlock button, located on
the front doors.
Note: To change the lock and unlock settings, go to Power Door Locks in the Vehicle Settings menu.
To open a locked door from inside, pull the inside door handle to unlock the door and
then pull the door handle again to open the door.
To prevent passengers from opening a rear door (if equipped) from the inside or open-
ing a rear window, press the Rear Door Security Lock/Rear Window Lockout
button located on the driver’s door. The button indicator will illuminate.
Locking Tailgate
To lock or unlock the tailgate, use the door key or the key fobF.
See Keys, Doors and Windows in your Owner Manual.
Power Mirror Adjustment
Press the Power Mirror Selector switch to select the driver’s or passenger’s mirror;
use the four-way control to adjust the mirror.
Power Folding Mirror
Press the Power Folding Mirror button to fold or unfold the mirrors.
See Keys, Doors and Windows in your Owner Manual.
Unlock
Press to unlock the
driver’s door. Press
again to unlock all
doors and tailgate.
Press and hold to lower
all windows.
Lock
Press to lock all doors and tailgate.
Vehicle Locator/Panic Alarm
Press and release to locate your vehicle.
The turn signal lamps will ash and the
horn will sound.
Press and hold to activate the alarm. The
turn signal lamps will ash and the horn
will sound until the button is pressed
again or the ignition is turned on.
Note: To change the remote lock, unlock, and
remote start settings, go to Remote Lock, Unlock,
Start in the Vehicle Settings menu.
Remote Vehicle StartF
Press and release the Lock button and
then press and hold the button until
the turn signal lamps ash to start the
engine from outside the vehicle. After
entering the vehicle, turn on the ignition.
• During a remote start, the engine will
run for 10 minutes.
• Press and hold the button until
the parking lamps turn off to cancel a
remote start.
Note: If the remote start heated/vented seat
option is selected, the heated/vented seat button
indicators do not illuminate and the temperature
performance of the unoccupied seat may be
reduced during the remote start. The heated/
vented seat turns off when the ignition is
turned on.
See Keys, Doors and Windows in your Owner Manual.

5
F Optional equipment
A. Seat Cushion Adjustment
Move the front horizontal control to
move the seat forward or rearward,
or to tilt, raise or lower the seat.
B. Seatback Adjustment
Move the vertical control to recline or
raise the seatback.
C. Lumbar Adjustment
Move the rear control to adjust the
lumbar support.
1. With the vehicle in Park, adjust the
driver’s seat, power outside mirrors
and adjustable pedalsFto the desired
positions.
2. Press and release the SET button and
then press and hold button 1on the
driver’s door until two beeps sound.
3. Repeat the steps using button 2for a
second driver.
Seat Adjustments
Set Memory Positions
Set Exit Position
1. Adjust the driver’s seat and adjustable pedalsFto the desired positions.
2. Press and release the SET button and then press and hold the Exit button on the
driver’s door until two beeps sound.
Recall Positions
With the vehicle in Park and the ignition on, press and release button 1or 2or the
Exit button to recall the stored position.
At any time, press and hold button 1or 2on the driver’s door until the stored position
is reached. Releasing the button before the stored position is reached cancels the
recall.
The memory/exit positions can be programmed to be recalled automatically when the
ignition is turned on/off (for exit recall, the driver’s door must be opened).
To set the Auto Memory Recall or Easy Exit Options, go to Settings > Vehicle > Comfort
and Convenience > Auto Memory Recall or Easy Exit Options.
See Seats and Restraints in your Owner Manual.
Power SeatsF
Head Restraints
To raise the head restraint, pull the head restraint up.
To lower the head restraint, press the button on top of the seatback and push the head
restraint down.
See Seats and Restraints in your Owner Manual.
AC
B

6
Lighting
Automatic Headlamp System
Rotate the knob to activate the exterior
lights.
Off/On
AUTO Automatic Headlamp System
Automatically activates the Daytime
Running Lamps (DRLs) or the headlamps
and other exterior lamps depending on
outside light conditions.
Parking Lamps
Headlamps
Fog LampsF
Press to turn the fog lamps on or off.
Instrument Panel Brightness
Rotate the thumbwheel to adjust the
instrument panel lighting.
See Lighting in your Owner Manual.
Instrument Panel Lighting
Cargo Lamp
Cargo Box Lamp
With the vehicle in Park, press to turn
the cargo lamp and under-rail pickup box
lightsFon or off. The button indicator will
illuminate when the lights are on.
See Instruments and Controls in your Owner Manual.
With the vehicle in Park, pull the lever
(A) on the left side of the steering col-
umn to adjust the tilt position of the
steering wheel. The steering wheel can
then be moved up or down. Release the
lever to lock the steering wheel in place.
With the vehicle in Park, push down the
leverF(B) closer to the instrument
panel on the left side of the steering
column to move the steering wheel in
or out. Pull up the lever to lock the
steering wheel in place.
See Instruments and Controls in your Owner Manual.
Tilt/TelescopingFSteering Wheel
B
A
F Optional equipment

7
Driver Information Center
The Driver Information Center (DIC) on the instrument cluster displays a variety of vehicle
system information and warning messages.
3.5-inch* Driver Information Center
Menu Items
Turn the reset stem on the instrument
cluster to scroll through the following
menu items: Digital Speedometer, Trip
Odometer, Fuel Range, Average Fuel
Economy, Tire Pressure, Remaining Oil
Life, Transmission Fluid Temperature,
Trailer Brake, Hourmeter, and Units.
Reset an Item
Press the reset stem to set a menu item
or clear a message. Press and hold the
stem to reset a menu item.
4.2-inch* Driver Information CenterF
Use the control pad on the right side of the steering wheel to view the Info (includes the
trip odometers and fuel information), Audio, Phone, Navigation, and Settings menus.
Menu Items
Press the or button to move
between the display zones.
Press the or button to move
through the menus.
Press to open a menu or select/
deselect a setting.
Reset an Item
1. Use the control pad to display the item.
2. Press and hold to reset or clear
the item.
See Instruments and Controls in your Owner Manual.
F Optional equipment *Screen measured diagonally

8
Climate Controls
Recirculation Mode
Press Recirculation Mode to quickly cool the air inside the vehicle or prevent
outside odors from entering the vehicle.
Note: When the Recirculation Mode is used without air conditioning, the air humidity increases and
the windows may fog.
See Climate Controls in your Owner Manual.
Defog Mode
Defrost
Mode
Recirculation
Mode
Floor Mode
TEMP
Temperature
Control
Bi-level Mode
REAR
Rear Window
Defogger
F
Fan Speed
Control/Off Vent Mode
A/C
Air
Conditioning
Control
F Optional equipment

9
Automatic Climate ControlsF
Automatic Operation
1. Press AUTO.
2. Set the temperature for the driver and front passenger. The system automatically
controls the fan speed, air delivery, air conditioning and recirculation to reach the set
temperature. Allow time for the system to reach the desired temperature.
If the air delivery mode or fan speed is manually adjusted, automatic operation is
turned off.
Recirculation Mode
Press Recirculation Mode to quickly cool the air inside the vehicle or prevent
outside odors from entering the vehicle.
Note: When the Recirculation Mode is used without air conditioning, the air humidity increases and
the windows may fog.
Sync Temperature Settings
Press SYNC to link the passenger’s temperature setting to the driver’s setting. When
the passenger’s setting is adjusted, the different passenger’s temperature setting is
displayed.
See Climate Controls in your Owner Manual.
Driver’s
Temperature
Control
Defog
Mode
Defrost
Mode
Passenger’s
Temperature
Control
Fan Speed
Control/On/
Off
Vent
Mode
A/C
Air
Conditioning
Control
AUTO
Automatic
Operation
Driver’s
Heated/
Vented Seat
Buttons
F
Passenger’s
Heated/
Vented Seat
Buttons
F
Recirculation
Mode
Floor
Mode
SYNC
Link passenger’s
temperature
setting to driver’s
temperature
setting
Bi-level
Mode
REAR
Rear
Window/
Outside
Mirror
Defogger
F
F Optional equipment

10
Windshield Wipers
Audio Steering Wheel ControlsF
Rotate the band on the lever to activate
the wipers. Fast Wipes
Slow Wipes
INT Intermittent
Adjust the delay between wipes. The
wipers activate more often as the band is
rotated upward.
OFF
Mist
Single wipe.
Washer Fluid
Push the paddle forward to spray washer
uid on the windshield.
See Instruments and Controls in your Owner Manual.
Push to Talk
Press to answer an incoming call or to use
natural voice recognitionFwith the audio,
BluetoothF, navigationFor OnStar®F
system.
End Call/Mute
Press to end or reject a call.
Press to mute/unmute the vehicle
speakers.
Next/Previous
With the Audio screen displayed on the
DIC, press or to seek the previous or
next radio station or track.
Volume
(behind right side of steering wheel)
Press the top or bottom button to adjust
the volume.
Next/Previous Favorite Station
(behind left side of steering wheel)
Press the top or bottom button to go to
the next or previous favorite radio station
or track.
See your Infotainment System Owner Manual.
Next/Previous Favorite Station button shown. Volume
button is located behind the right side of the steering
wheel.
F Optional equipment

11
GMC IntelliLink Radio with 7-Inch* Color ScreenF
F Optional equipment *Screen measured diagonally
Press to view Phone screen
or answer a call/Press
and hold to access
Push to Talk
Home
screen
Power/
Volume
Setting the Time
1. Touch Settings on the home page.
2. Touch Time and Date.
3. Touch Set Time.
4. Touch the arrows to adjust the hours,
minutes and AM or PM.
5. Touch BACK to exit the menu.
Storing Favorites
Up to 25 AM, FM and SiriusXM radio
stations can be stored, in any order, on up
to ve pages.
1. Tune in the desired radio station.
2. Touch the
or
button to display
where the station is to be stored.
3. Touch and hold one of the preset screen
buttons until a beep is heard.
4. Repeat the steps for each desired station.
Applications:
Touch the screen
icon to access the
application
SEEK
Previous radio
station or
track
SEEK
Next radio
station or
track
Refer to your Owner Manual for important safety information about using the infotainment
system while driving.
For assistance with the IntelliLink system, contact Customer Assistance at
1-855-4-SUPPORT (1-855-478-7767) or visit www.gmc.com and click the More GMC link.
See Infotainment System in your Owner Manual.

12
GMC IntelliLink Radio with 8-Inch* Color ScreenF
See your Infotainment System Owner Manual.
Interaction
Selector:
Touch to display
the favorites list
TUNE/MENU
Tune radio
stations/Open and
select menus
Applications:
Touch the screen
icon to access the
application
Additional Pages:
Touch to view
additional pages
of applications
(if available)
Power/
Volume
BACK
Move back one
level in the
menus
Home
screen
Eject
disc
MEDIA
Select the
media source
RADIO
Select AM,
FM, XM
F
SEEK:
Previous/Next radio
station or track
F Optional equipment *Screen measured diagonally
GMC IntelliLink uses a Bluetooth or USB connection to link to a compatible device, such
as a smartphone, cell phone, USB ash drive or portable audio player/iPod®, and features
hands-free voice control. For assistance with the IntelliLink system, contact Customer
Assistance at 1-855-4-SUPPORT (1-855-478-7767) or visit www.gmc.com and click the
More GMC tab.
Refer to your Owner Manual for important safety information about using the infotainment
system while driving.

13
GMC IntelliLink Radio with 8-Inch* Color ScreenF
Setting the Time
1. Touch Settings on the home page.
2. Touch Time and Date.
3. Touch Set Time.
4. Touch the arrows to adjust the hours, minutes
and AM or PM.
5. Touch BACK to exit the menu.
Storing Favorites
Up to 60 radio stations from all bands (AM, FM or SiriusXMF), media (song, artist, album,
and genre with device connected to a USB port), phone contacts and navigation destina-
tionsFcan be stored in any order.
1. Select the desired radio station, media favorite, navigation destination or contact.
2. Touch and drag up the Interaction Selector at the bottom of the screen to display
the favorite screen buttons.
3. Touch and hold one of the favorite screen buttons until a beep is heard, indicating it
is stored.
4. Repeat the steps to store another favorite item.
To change the number of favorites displayed, go to Radio in the Settings menu.
Managing Home Page Icons
1. Press the Home button.
2. To enter edit mode, touch and hold the home
page icon to move.
3. Continue holding the icon and drag it to the
desired position, and then release.
4. Press the Home button to exit edit mode.
Natural Voice Recognition
Control the music source and make phone calls hands-free (after pairing your Bluetooth-
enabled phone) using the natural voice recognition system.
1. Press the Push to Talk button on the steering wheel.
2. The radio will say “Command please,” followed by a beep.
3. After the beep, say what you want it to do using natural speech.
(Example: “Call Amanda” or “Tune FM 104.3.” Say “Help” for assistance.)
PANDORA®Internet Radio
Listen to personalized radio stations based on favorite artists or genres.
Download the Pandora app to your smartphone and sign in to Pandora.
Create a station on your phone to listen to a customized song list in the vehicle.
Connect your smartphone by Bluetooth or, for Apple devices, by a USB cable.
Touch the Pandora icon on the touch screen to access Pandora. A slight delay may
occur when loading a song or changing a station.
See your Infotainment System Owner Manual.
F Optional equipment *Screen measured diagonally

14
Apple CarPlay™ and Android Auto™F
OnStar® with 4G LTE and Wi-Fi®F
If equipped with OnStar 4G LTE and Wi-Fi, up to seven devices (smartphones, tablets
and laptops) can be connected to high-speed Internet through the vehicle’s built-in Wi-Fi
hotspot.
To retrieve the SSID and password for the hotspot, press the OnStar Voice Command
button on the overhead console or rearview mirror, wait for the prompt, and then say
“Wi-Fi settings.” The information will be displayed on the screen.
For assistance, press the blue OnStar button or call 1-888-4-ONSTAR (1-888-466-7827).
Note: See onstar.com for a detailed instruction guide, vehicle availability, details, and system
limitations.
See your Infotainment System Owner Manual.
F Optional equipment *Late availability
The Wireless Charging system is located on the storage tray on top of the center console.
To check mobile device compatibility, visit my.gmc.com/learn. See your phone retailer for
details on required phone accessories.
1. The vehicle must be on or Retained Accessory Power must be active.
2. Remove all objects from the charging pad.
3. Place the device, face up, on the symbol on the pad, aligned with the rear rib.
4. Move the device slowly until the battery charging symbol displays on the infotainment
screen. If not charging, remove the device for 3 seconds, and rotate it 180 degrees.
See your Infotainment System Owner Manual.
Wireless ChargingF
Apple CarPlay or Android Auto*capability may be available through a compatible
smartphone. If available, a Projection icon will appear on the home page of the
infotainment display.
1. No app is required for Apple CarPlay. Download the Android Auto app to your phone
from the Google Play store.
2. Connect your Apple iPhone or Android phone by plugging the compatible phone USB
cable into a USB data port. Use your device’s factory-provided USB cable. Aftermarket
cables may not work.
3. The Projection icon will change to Apple CarPlay or Android Auto, depending
on the phone. Apple CarPlay or Android Auto may launch automatically upon USB
connection. If not, touch the Apple CarPlay or Android Auto icon on the home page.
For more information on using Apple CarPlay or Android Auto, call 1-855-4-SUPPORT
(1-855-478-7767) or visit my.gmc.com/learn.
See your Infotainment System Owner Manual.

15
F Optional equipment
Bluetooth® SystemF
Portable Audio Devices
Refer to your Owner Manual for important safety information about using the Bluetooth system
while driving.
Before using a Bluetooth-enabled device in the vehicle, it must be paired with the in-
vehicle Bluetooth system. The pairing process is disabled when the vehicle is moving.
Not all devices will support all functions. Bluetooth streaming audio is available with the
IntelliLink system.FFor more information, visit my.gmc.com/learn.
Pair a Phone
1. To use voice recognition, press the Push to Talk button; after the beep, say
“Pair phone,” or
Use the MENU knob or the touch screen to
select the Phone icon > Phones > Pair Device.
2. Start the pairing process on the phone. Locate
GMC IntelliLink on the phone.
3. Enter the four-digit code that appears on the
touch screen into the phone or, if a six-digit
code appears on the phone, conrm it on the
touch screen.
4. If your phone prompts you to accept the
connection or phone book download, select Always Accept and Allow.
Streaming Audio
With a paired device connected via Bluetooth, press the MEDIA button until Bluetooth is
displayed on the touch screen to stream audio from the device. Control audio operation
using the device controls.
See your Infotainment System Owner Manual.
An accessory power outlet, dual USB ports
and auxiliary jack are located in the center
seat console (bench seat) or center console
(bucket seats).
An iPod®, iPhone®, MP3 Player, a USB ash
drive or a USB mass storage device can be
connected to the USB port. GMC IntelliLinkF
will read the device and build a list of
songs. Search for music on-screen or by
voice commands.
Press the MEDIA button to select a portable
device as the audio source.
See your Infotainment System Owner Manual.
Note: Connect a mobile device USB cord after
starting the vehicle for optimum performance.

16
Vehicle Personalization
Cruise Control
Changing Vehicle Settings
The Vehicle Settings menu may include
Climate and Air Quality, Collision/
Detection Systems, Comfort and
Convenience, Lighting, Power Door Locks,
and Remote Lock/Unlock/Start.
Use the MENU knob or the touch
screen to:
1. Select Settings on the home page.
2. Select Vehicle.
3. Select the desired menu item.
4. Select the desired feature and setting.
Settings are saved automatically.
5. Select BACK to exit each menu.
See Instruments and Controls in your Owner Manual.
Some vehicle features can be customized using the audio controls and menus or the
touch screen buttonsF.
Setting Cruise Control
1. Press the On/Off button. The
Cruise Control symbol will illuminate in
white on the instrument cluster.
2. When traveling at the desired speed,
press the SET– button to set the speed.
The symbol will illuminate in green
on the instrument cluster.
Adjusting Cruise Control
RES+ Resume/Accelerate
Press to resume a set speed.
When the system is active, press once to
increase speed 1 mph; press and hold to
continue increasing the speed.
SET– Set/Coast
When the system is active, press once to
decrease speed 1 mph; press and hold to
continue decreasing the speed.
Cancel
Press to cancel the cruise control without
erasing the set speed from memory.
Pressing the brake pedal also will cancel
the cruise control.
The cruise control set speed is erased
when cruise control or the vehicle ignition
is turned off.
See Driving and Operating in your Owner Manual.
F Optional equipment

17
Driver Assistance Systems
The driver assistance systems use advanced technologies to help avoid collisions by
providing visual and audible alerts under some imminent collision conditions.
Forward Collision AlertF– The Vehicle Ahead indi-
cator will illuminate in green on the instrument cluster
when a vehicle is detected and will illuminate in amber
when following a vehicle ahead too closely. If your vehicle
approaches another vehicle too rapidly, the will ash,
a visual alert will ash on the windshield and the Safety
Alert SeatFwill pulse. See Safety Alert Seat.
Press the Collision Alert button on the left side of
the steering wheel to set the alert sensitivity to Far, Medium, Near, or Off. The setting
is displayed in the Driver Information Center.
Lane Keep Assist with Lane Departure WarningF(LD Models Only) – The Lane Keep
Assist indicator is green on the instrument cluster when a lane marking is detected. The
system may assist by gently turning the steering wheel and display an amber if the
vehicle approaches a detected lane marking without using a turn signal in that direction.
It may also provide a Lane Departure Warning alert by ashing an amber and pulsing
the left or right side of the Safety Alert SeatFas the lane marking is crossed. See Safety
Alert Seat.
Press the Lane Keep Assist button on the center of the instrument panel to turn
the system on or off.
Lane Departure WarningF (HD Models Only) – When crossing a detected lane marking
without using a turn signal, the system ashes an amber visual alert on the instrument
cluster and pulses the left or right side of the Safety Alert SeatF. See Safety Alert Seat.
Press the Lane Departure Warning button on the center of the instrument panel to
turn the system on or off.
Safety Alert SeatF– The driver’s seat pulses, left side, right side, or simultaneously, to
alert the driver of potential hazards.
Audible notication may be selected instead of Safety Alert Seat pulsing notication.
To change the alert setting, go to Settings > Vehicle > Collision/Detection > Alert Type.
Rear Vision CameraF– Provides a view directly behind the vehicle when backing up.
To turn the Rear Vision Camera Guidelines or Rear Park Assist Symbols on or off, go to
Settings > Rear Camera.
Front and/or Rear Parking AssistF– During low-speed parking maneuvers, the system
provides “distance to closest object” information in the Driver Information Center and a
caution symbol on the Rear Vision Camera display. When the vehicle should be stopped
immediately to avoid a collision, a continuous audible tone sounds or the Safety Alert
Seat pulses. See Safety Alert Seat.
To turn the system on or off, press the Parking Assist button on the center of the
instrument panel.
F Optional equipment
See Driving and Operating in your Owner Manual.

18
Automatic Transmission
Integrated Trailer Brake Control (ITBC)F
Diesel Exhaust Brake (Diesel Models Only)
Range Selection Mode
Range Selection Mode allows the driver to select
the range of gears desired for the current driving
conditions.
1. Move the shift lever to the Manual (M) position.
2. Press the + (plus) or – (minus) button on the
shift lever to select a lower or higher gear. An
M and the current gear will be displayed on
the Driver Information Center.
The transmission will be limited to the gear selected and lower gears. If vehicle speed is
too high or too low for the requested gear, the shift will not occur.
Tow/Haul Mode
The Tow/Haul Mode adjusts the transmission shifts to reduce shift cycling, such as when
towing or hauling heavy loads or driving on steep grades.
Press the Tow/Haul Mode button on the end of the shift lever to turn the system
on or off.
See Driving and Operating in your Owner Manual.
The ITBC system can be used to adjust the
amount of power output, or Trailer Gain, avail-
able to the trailer brakes. The control panel is
located on the left side of the instrument panel.
ITBC information is displayed on the Driver
Information Center.
Adjust the Trailer Gain by pressing the +/–
adjustment buttons on the control panel.
Squeeze the levers together on the control panel (left lever does not move) to manual-
ly apply the trailer brakes.
See Driving and Operating in your Owner Manual.
The engine exhaust brake enhances the vehicle
brake system by using engine braking and auto-
matically downshifting the transmission, depend-
ing on the length of time the brakes are applied,
to help slow the vehicle on downhill grades.
Press the Diesel Exhaust Brake button on
the center of the instrument panel to turn the
system on or off.
See your Duramax Diesel Owner Manual.
F Optional equipment

19
Hill Descent Control sets and maintains vehicle speed from 2–14 mph while descending a
steep incline in a forward or reverse gear.
1. Press the Hill Descent Control button on the center of the instrument panel.
Vehicle speed must be below 31 mph to enable the system. The Hill Descent Control
symbol will illuminate on the instrument cluster.
2. Increase or decrease speed by applying the accelerator or brake pedal or use the Cruise
Control +/– buttons on the steering wheel. The adjusted speed becomes the new set
speed. The symbol ashes when the system is actively applying the brakes to main-
tain vehicle speed.
See Driving and Operating in your Owner Manual.
Hill Descent ControlF(Z71)
The traction control system limits wheelspin and the StabiliTrak®stability control system
assists with directional control of the vehicle in difcult driving conditions. Both systems
turn on automatically every time the vehicle is started.
Turn off traction control if the vehicle is stuck
and rocking the vehicle is required.
Press the Traction Control/StabiliTrak Off
button on the center of the instrument panel
to turn traction control off or back on. The
Traction Control Off light will illuminate on
the instrument cluster when the system is off.
See Driving and Operating in your Owner Manual.
Traction Control and StabiliTrak Systems
The Low Tire Pressure warning light on the instrument cluster illuminates when one
or more of the vehicle’s tires is signicantly underinated. Fill the tires to the proper tire
pressures. The proper tire pressures for the vehicle are listed on the Tire and Loading
Information label, located below the driver’s door latch. Current tire pressures can be
viewed in the Driver Information Center.
Tire pressure is affected by cold weather and distance driven. If the low tire pressure
warning light illuminates when the vehicle is rst started in cooler temperatures and
then turns off as the vehicle is driven, check for the proper tire pressures.
Refer to your Owner Manual for additional information about normal monthly tire maintenance.
See Vehicle Care in your Owner Manual.
Tire Pressure Monitor (Single Rear Wheel Models Only)
F Optional equipment

20
The myGMC mobile app connects owners to a variety of vehicle
information and services, such as a searchable Owner Manual, real-time
fuel information and Roadside Assistance.
Download the OnStar RemoteLink mobile app and enjoy select features
for ve years from date of vehicle delivery. With a compatible mobile
device, OnStar subscribers can access many services, including remotely starting/
stopping the vehicle, locking/unlocking doors, and locating the vehicle on a map (on
properly equipped vehicles). To learn more about OnStar services, press the blue OnStar
button, call 1-888-4ONSTAR (1-888-466-7827), visit onstar.com or refer to your owner
manual.
Download the mobile apps from your compatible mobile device’s app store.
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Roadside Assistance
1-888-881-3302 TTY Users: 1-888-889-2438
As the owner of a new GMC, you are automatically enrolled in the GMC Roadside
Assistance program for up to 5 years/60,000 miles, whichever occurs rst, at no expense
to you. GMC’s Roadside Assistance toll-free number is staffed by a team of trained advi-
sors who are available 24 hours a day, 365 days a year, to contact a service provider for
light services (fuel delivery, jump-starts, at tire and lock-outs) or make arrangements to
tow your vehicle to the nearest GMC dealer for any repairs.
Roadside Assistance and OnStar®
If you require roadside service and have a current OnStar subscription, press the OnStar
button and the vehicle will send your current GPS location to an OnStar Advisor who
will speak to you, assess your problem, contact Roadside Assistance and relay your exact
location so you will get the help you need.
GMC Owner Center
Get to know your vehicle inside and out with the GMC Owner Center. Check out personal-
ized information, including an online owner manual and helpful how-to videos, track your
service history and warranty status, review your current OnStar Vehicle Diagnostics report
(active OnStar account required) and more. Create an account today at my.gmc.com.
Certain restrictions, precautions and safety procedures apply to your vehicle. Please read your Owner Manual
for complete instructions. All information contained herein is based on the latest information available at the
time of printing and is subject to change without notice. Copyright 2015 General Motors. All rights reserved.
We recommend always using ACDelco or genuine GM service parts.
myGMC and OnStar Mobile Apps