GMC SIERRA 2018 Owner's Manual

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
180 Lighting
There is a light sensor on top of the
instrument panel. Do not cover the
sensor, otherwise the headlamps
will come on when they are not
needed.
The system may also turn on the
headlamps when driving through a
parking garage or tunnel.
If the vehicle is started in a dark
garage, the automatic headlamp
system comes on immediately. If it
is light outside when the vehicle
leaves the garage, there is a slight
delay before the automatic
headlamp system changes to the
DRL. During that delay, the
instrument cluster may not be as
bright as usual. Make sure the
instrument panel brightness controlis in the full bright position. See
Instrument Panel Illumination
Control
0182.
When it is bright enough outside,
the headlamps will turn off or may
change to Daytime Running
Lamps (DRL).
The automatic headlamp system
turns off when the exterior lamp
control is turned toOor the ignition
is off.
Lights On with Wipers
If the windshield wipers are
activated in daylight with the engine
on, and the exterior lamp control is
in AUTO, the headlamps, parking
lamps, and other exterior lamps
come on. The transition time for the
lamps coming on varies based on
wiper speed. When the wipers are
not operating, these lamps turn off.
Move the exterior lamp control to
O
or;to disable this feature.
Hazard Warning Flashers
|: Press this button to make the
front and rear turn signal lamps
flash on and off. Press again to turn
the flashers off.
When the hazard warning flashers
are on, the vehicle's turn signals will
not work.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
Lighting 181
Turn and Lane-Change
Signals
An arrow on the instrument cluster
flashes in the direction of the turn or
lane change.
Move the turn signal lever all the
way up or down to signal a turn.
Raise or lower the lever for less
than one second until the arrow
starts to flash to signal a lane
change. 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 and Circuit
Breakers 0381.
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.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
182 Lighting
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 ofthis button. Pressing the top of the
button will turn off the roof-mounted
lamp and indicator.
The emergency roof lamp circuit is
fused at 30 amps, so the total
current draw of the attached lamps
should be less than this value. The
attachment points for the roof lamp
circuits are two blunt cut wires
above the overhead console: a dark
green with blue stripe switched
power wire and a black ground wire.
For information on roof-mounted
emergency lamp installation, see
www.gmupfitter.com or contact your
dealer.
If the vehicle has this button, the
vehicle may have the snow plow
prep package. See
Add-On
Electrical Equipment 0336.
Interior Lighting
Instrument Panel
Illumination Control
This feature controls the brightness
of the steering wheel and instrument
panel lights. The instrument panel
illumination control is next to the
exterior lamp control.
D:Move the thumbwheel up or
down to brighten or dim the lights.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
Lighting 183
Cargo Lamp
The cargo lamp provides more light
in the cargo area or on the sides of
the vehicle, if needed. The lights
inside the pickup box and/or on the
outside mirrors also turn on,
if equipped.
Press the switch to turn the cargo
lamp on or off. An indicator light will
turn on when the lamp is turned on,
if equipped. The shift lever must be
in P (Park) to operate the cargo
lamp. The lights on the outside
rearview mirrors turn on if the shift
lever is in R (Reverse), N (Neutral),
or P (Park).
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.
Reading Lamps
There are reading lamps in the
overhead console and the headliner,
if equipped. To operate, the
ignition must be on or in ACC/
ACCESSORY, or using Retained
Accessory Power (RAP).

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
184 Lighting
Pressmornnext to each reading
lamp to turn it on or off.
Lighting Features
Entry Lighting
Some exterior lamps and the interior
lamps turn on briefly at night, or in
areas with limited lighting, when
K
is pressed on the Remote Keyless
Entry (RKE) transmitter. When a
door is opened, the interior lamps
come on if the dome lamp control is
in the DOOR position. After about
30 seconds the exterior lamps turn
off. Entry lighting can be disabled
manually by changing the ignition
out of the OFF position, or by
pressing the RKE transmitter
Q
button.
This feature can be changed. See
“Vehicle Locator Lights” under
Vehicle Personalization 0165.
Exit Lighting
Some exterior lamps and the interior
lamps come on at night, or in areas
with limited lighting when the key is
removed from the ignition. The
exterior and interior lamps remain on for a set amount of time and then
automatically turn off. The interior
lamps do not come on if the dome
lamp control is in the Off position.
The exterior lamps turn off
immediately by turning the exterior
lamps control off.
This feature can be changed. See
Vehicle Personalization
0165.
Battery Load
Management
The vehicle has Electric Power
Management (EPM), which
estimates the battery's temperature
and state of charge. It then adjusts
the voltage for best performance
and extended life of the battery.
When the battery's state of charge
is low, the voltage is raised slightly
to quickly bring the charge back up.
When the state of charge is high,
the voltage is lowered slightly to
prevent overcharging. The voltmeter
gauge or the voltage display on the
Driver Information Center (DIC),
if equipped, may show the voltage

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
Lighting 185
moving up or down. This is normal.
If there is a problem, an alert will be
displayed.
The battery can be discharged at
idle if the electrical loads are very
high. This is true for all vehicles.
This is because the generator
(alternator) may not be spinning fast
enough at idle to produce all the
power that is needed for very high
electrical loads.
A high electrical load occurs when
several of the following are on, such
as: headlamps, high beams, fog
lamps, rear window defogger,
climate control fan at high speed,
heated seats, engine cooling fans,
trailer loads, and loads plugged into
accessory power outlets.
EPM works to prevent excessive
discharge of the battery. It does this
by balancing the generator's output
and the vehicle's electrical needs.
It can increase engine idle speed to
generate more power, whenever
needed. It can temporarily reduce
the power demands of some
accessories.Normally, these actions occur in
steps or levels, without being
noticeable. In rare cases at the
highest levels of corrective action,
this action may be noticeable to the
driver. If so, a DIC message might
be displayed and it is recommended
that the driver reduce the electrical
loads as much as possible.
Battery Power Protection
This feature shuts off the dome and
reading lamps, if they are left on for
more than 10 minutes after the
ignition is turned off. The cargo
lamp shuts off after 20 minutes. This
prevents the battery from
running down.
Exterior Lighting Battery
Saver
The exterior lamps turn off about
10 minutes after the ignition is
turned off, if the parking lamps or
headlamps have been manually left
on. This protects against draining
the battery. To restart the 10-minute
timer, turn the exterior lamp control
to the
Oposition and then back to
the
;or2position.
To keep the lamps on for more than
10 minutes, the ignition must be on
or in ACC/ACCESSORY.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
186 Infotainment System
Infotainment
System
Introduction
Infotainment . . . . . . . . . . . . . . . . . . 186
Theft-Deterrent Feature . . . . . . 187
Overview . . . . . . . . . . . . . . . . . . . . . 188
Home Page . . . . . . . . . . . . . . . . . . 189
Software Updates . . . . . . . . . . . . 189
Radio
AM-FM Radio . . . . . . . . . . . . . . . . 190
Satellite Radio . . . . . . . . . . . . . . . . 192
Radio Reception . . . . . . . . . . . . . . 193
Fixed Mast Antenna . . . . . . . . . . 194
Multi-Band Antenna . . . . . . . . . . 194
Audio Players
Avoiding Untrusted MediaDevices . . . . . . . . . . . . . . . . . . . . . 195
CD Player . . . . . . . . . . . . . . . . . . . . 195
USB Port . . . . . . . . . . . . . . . . . . . . . 197
Auxiliary Jack . . . . . . . . . . . . . . . . 203
Bluetooth Audio . . . . . . . . . . . . . . 204
Voice Recognition
Voice Recognition . . . . . . . . . . . . 205
Phone
Bluetooth (Overview) . . . . . . . . . 211
Bluetooth (Infotainment Controls) . . . . . . . . . . . . . . . . . . . . 213
Apple CarPlay and Android Auto . . . . . . . . . . . . . . . . 217
Trademarks and License
Agreements
Trademarks and License
Agreements . . . . . . . . . . . . . . . . . 218
Introduction
Infotainment
Base radio information is included in
this manual. See the infotainment
manual for information on other
available infotainment systems.
Read the following pages to
become familiar with the features.
{Warning
Taking your eyes off the road for
too long or too often while using
any infotainment feature can
cause a crash. You or others
could be injured or killed. Do not
give extended attention to
infotainment tasks while driving.
Limit your glances at the vehicle
displays and focus your attention
on driving. Use voice commands
whenever possible.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
Infotainment System 187
The infotainment system has built-in
features intended to help avoid
distraction by disabling some
functions when driving. These
functions may gray out when they
are unavailable. Many infotainment
features are also available through
the instrument cluster and steering
wheel controls.
Before driving:
.Become familiar with the
operation, center stack controls,
and infotainment display
controls. .
Set up the audio by presetting
favorite stations, setting the
tone, and adjusting the
speakers.
. Set up phone numbers in
advance so they can be called
easily by pressing a single
control or by using a single voice
command if equipped with
Bluetooth phone capability.
See Defensive Driving 0236.
To play the infotainment system with
the ignition off, see Retained
Accessory Power (RAP) 0260.Theft-Deterrent Feature
TheftLock is designed to discourage
theft of the vehicle's radio by
learning a portion of the Vehicle
Identification Number (VIN). The
radio does not operate if it is stolen
or moved to a different vehicle.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
188 Infotainment System
Overview1.{
.Press to go to the Home
Page. See Home Page
0 189.
2.
7
. Radio: Press and release to
go to the previous station or
channel. Press and hold to
fast seek the next strongest
previous station or channel.
. USB/Bluetooth Music/
Pictures: Press and hold to
go to the previous content.
Press and hold to fast
rewind.
3.
O
. Press to turn the power on.
. Press and hold to turn the
power off.
. Press to mute the system
when on.
. Turn to decrease or
increase the volume.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
Infotainment System 189
4.6
.Radio: Press and release to
go to the next station or
channel. Press and hold to
fast seek the next strongest
station or channel.
. USB/Bluetooth Music/
Pictures: Press and hold to
go to the next content.
Press and hold to fast
forward.
5.
#
. Press and release to
access the phone screen,
answer an incoming call,
or access the device home
screen. Press and hold to
access Press to Talk.
Home Page
Touchscreen Buttons
Touchscreen buttons show on the
screen when available. When a
function is unavailable, the button
may gray out. When a function is
selected, the button may highlight.
Home Page Features
Press{to go to the Home Page.
Audio : Touch to select AM, FM,
SiriusXM (if equipped), USB/iPod/
Bluetooth Audio, or AUX.
Gallery : Touch to view a picture or
movie.
Phone : Touch to activate the
phone features (if equipped).
See Bluetooth (Overview) 0211 or
Bluetooth (Infotainment Controls)
0 213.
Projection : Touch to access USB
supported devices when connected.
See USB Port 0197. Settings :
Touch to access the
Personalization menu. See Vehicle
Personalization 0165.
Climate : Touch to access the
Climate menu. See Climate Control
Systems (with Heater Only) 0224 or
Climate Control Systems (with Air
Conditioning) 0226.
OnStar : If equipped, touch to
access the OnStar menu. See
OnStar Overview 0479.
Software Updates
Over-the-Air Software Updates
If equipped, the infotainment system
can download and install select
software updates over a wireless
connection. The system will prompt
for certain updates to be
downloaded and installed. There is
also an option to check for updates
manually.