2018 GMC SIERRA DENALI ECO mode

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
104 Seats and Restraints
{ WarningChildren can be seriously injured
or strangled if a shoulder belt is
wrapped around their neck. The
shoulder belt can tighten but
cannot be loosened if it is locked.
The shoulder belt locks when it is
pulled all the way out of the
retractor. It unlocks when the
shoulder belt is allowed to go all
the way back into the retractor,
but it cannot do this if it is
wrapped around a child ’ s neck.
If the shoulder belt is locked and
tightened around a child ’ s neck,
the only way to loosen the belt is
to cut it.
Buckle any unused seat belts
behind the child restraint so
children cannot reach them. Pull
the shoulder belt all the way out
of the retractor to set the lock,
and tighten the belt behind the
child restraint after the child
restraint has been installed. CautionDo not let the LATCH
attachments rub against the
vehicle ’ s seat belts. This may
damage these parts. If necessary,
move buckled seat belts to avoid
rubbing the LATCH attachments.
Do not fold the rear seatback
when the seat is occupied. Do not
fold the empty rear seat with a
seat belt buckled. This could
damage the seat belt or the seat.
Unbuckle and return the seat belt
to its stowed position, before
folding the seat.
If you need to secure more than one
child restraint in the rear seat, see
Where to Put the Restraint 0 98 .
This system is designed to make
installation of child restraints easier.
When using lower anchors, do not
use the vehicle's belts. Instead use
the vehicle's anchors and child
restraint attachments to secure the restraints. Some restraints also use
another vehicle anchor to secure a
top tether.
Regular Cab Models
1. For models without a rear seat,
forward-facing child restraints
should only be installed in the
right front seating position with
belts and a top tether. See
Securing Child Restraints (With
the Seat Belt in the Center
Front Seat) 0 114 or Securing
Child Restraints (With the Seat
Belt in the Front Passenger
Seat) 0 115 or Securing Child
Restraints (With the Seat Belt
in the Rear Seat) 0 111 .
If the child restraint
manufacturer recommends that
the top tether be attached,
attach and tighten the top
tether to the top tether anchor,
if your vehicle has one. Refer
to the child restraint
instructions and the following
steps:

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
146 Instruments and Controls When the engine is running, this
gauge shows the condition of the
charging system. The gauge can
transition from a higher to lower or a
lower to higher reading. This is
normal. If the vehicle is operating
outside the normal operating range,
the charging system light comes on.
See Charging System Light 0 149
for more information. The voltmeter
gauge may also read lower when in
fuel economy mode. This is normal.
Readings outside the normal
operating range can also occur
when a large number of electrical
accessories are operating in the
vehicle and the engine is left idling
for an extended period. This
condition is normal since the
charging system is not able to
provide full power at engine idle. As
engine speeds are increased, this
condition should correct itself as
higher engine speeds allow the
charging system to create maximum
power.
The vehicle can only be driven for a
short time with the readings outside
the normal operating range. If the vehicle must be driven, turn off all
accessories, such as the radio and
air conditioner and unplug all
chargers and accessories.
Readings outside the normal
operating range indicate a possible
problem in the electrical system.
Have the vehicle serviced as soon
as possible.
Seat Belt Reminders Driver Seat Belt Reminder
Light There is a driver seat belt reminder
light on the instrument cluster.
When the vehicle is started, this
light flashes and a chime may come
on to remind the driver to fasten
their seat belt. Then the light stays
on solid until the belt is buckled.
This cycle may continue several times if the driver remains or
becomes unbuckled while the
vehicle is moving.
If the driver seat belt is buckled,
neither the light nor the chime
comes on.
Passenger Seat Belt Reminder
Light There may be a passenger seat belt
reminder light near the passenger
airbag status indicator. See
Passenger Sensing System 0 86 .
For vehicles equipped with the
passenger seat belt reminder light,
when the vehicle is started this light
flashes and a chime may come on
to remind passengers to fasten their
seat belt. Then the light stays on
solid until the belt is buckled. This
cycle continues several times if the

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
Instruments and Controls 1612. Press
w or
x to scroll to the
Options application.
3. Press
V to enter the
Options menu.
4. Scroll to Info Pages and
press
p .
5. Press
w or
x to move
through the list of possible
information displays.
6. Press
V while an item is
highlighted to select or
deselect that item. When an
item is selected, a checkmark
will appear next to it.
DIC Info Pages The following is the list of all
possible DIC info page displays.
Some may not be available for your
particular vehicle. Some items may
not be turned on by default but can
be turned on through the Options
app. See “ DIC Info Page Options ”
earlier in this section. Speed : Shows the vehicle speed in
either kilometers per hour (km/h) or
miles per hour (mph). The vehicle
odometer is also shown on this
page. If equipped, press
p to open
the menu and select to display
speed limit signs.
Trip A or Trip B, Average Fuel
Economy, and Average Speed :
Shows the current distance traveled,
in either kilometers (km) or
miles (mi), since the trip odometer
was last reset.
The Average Fuel Economy display
shows the approximate average
liters per 100 kilometers (L/100 km)
or miles per gallon (mpg). This
number is calculated based on the
number of L/100 km (mpg) recorded
since the last time this menu item
was reset. This number reflects only
the approximate average fuel
economy that the vehicle has right
now, and will change as driving
conditions change.
The Average Speed display shows
the average speed of the vehicle in
kilometers per hour (km/h) or miles per hour (mph). This average is
calculated based on the various
vehicle speeds recorded since the
last reset of this value.
Press and hold
V while this display
is active to reset the trip odometer,
the average fuel economy, and the
average speed. Or press
p and
select reset in the menu.
Fuel Range and Instantaneous
Fuel Economy : Shows the
approximate distance the vehicle
can be driven without refueling.
LOW will be displayed when the
vehicle is low on fuel. The fuel
range estimate is based on an
average of the vehicle's fuel
economy over recent driving history
and the amount of fuel remaining in
the fuel tank. It also shows if the
Active Fuel Management is active
and in V4 mode, or inactive and in
V8 mode. See Active Fuel
Management 0 264 .
The Instantaneous Fuel Economy
display shows the approximate
current fuel economy in either liters
per 100 kilometers (L/100 km) or

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
Instruments and Controls 163Economy Trend : Shows history of
the Average Fuel Economy from the
last 50 km (30 mi). Each bar
represents about 5 km (3 mi) of
driving. During driving the bars will
shift to always reflect the most
recent distance on the right side.
Press and hold
V to clear the graph
or press
p to reset through
the menu.
ECO Index : The bar graph
provides feedback on the efficiency
of current driving behavior. The
graph shows a value that is based
on current fuel consumption
compared to what is expected from
the vehicle with good and bad
driving habits. It also shows if the
Active Fuel Management is active
and in V4 mode, or inactive and in
V8 mode. See Active Fuel
Management 0 264 . Engine Hours : Shows the total
number of hours the engine has run.
This display also shows the engine
idle hours.
Trailer Brake : On vehicles with the
Integrated Trailer Brake Control
(ITBC) system, the trailer brake
display appears in the DIC.
TRAILER GAIN shows the trailer
gain setting. This setting can be
adjusted from 0.0 to 10.0 with either
a trailer connected or disconnected.
OUTPUT shows the power output to
the trailer any time a trailer with
electric brakes is connected. Output
is displayed as a bar graph. Dashes
may appear in the OUTPUT display.
Speed Signs : Shows sign
information, which comes from a
roadway database in the onboard
navigation. Following Distance : Used to
select the alert timing for the
Forward Collision Alert (FCA). See
Forward Collision Alert (FCA)
System 0 292 .
Blank Page : Shows no
information.
Transmission Fluid Temperature
Gauge : Shows the temperature of
the automatic transmission fluid in
either degrees Celsius (°C) or
degrees Fahrenheit (°F).
Off Road : Displays vehicle pitch
and roll information, road wheel
angle, and four-wheel drive (4WD)
status.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
166 Instruments and Controls The selected language will display
on the system, and voice
recognition will reflect the selected
language.
Video Voice-Over Select Off or On.
Valet Mode This will lock the infotainment
system and steering wheel controls.
It may also limit access to vehicle
storage locations, if equipped.
To enable valet mode:
1. Enter a four-digit code on the
keypad.
2. Select Enter to go to the
confirmation screen.
3. Re-enter the four-digit code.
Touch Lock or Unlock to lock or
unlock the system. Touch Back to
go back to the previous menu.
Teen Driver
See “ Teen Driver ” under “ Settings ”
in the infotainment manual. Radio Select and the following may
display:
.
Manage Favorites
.
Number of Favorites Shown
.
Audible Touch Feedback
.
Text Scroll
.
Tone Settings
.
Auto Volume
.
Maximum Startup Volume
.
Audio Cue Volume
Manage Favorites
This allows favorites to be edited.
See “ Manage Favorites ” in “ Radio
Setup ” under Home Page 0 189 or
“ Manage Favorites ” in “ Settings ”
under “ Radio ” in the infotainment
manual.
Number of Favorites Shown
Select to set the number of favorites
to display. Select the desired number or select
Auto and the infotainment system
will automatically adjust the number
of favorites shown.
Audible Touch Feedback
This allows Audible Touch
Feedback to be turned on or off.
Select Off or On.
Text Scroll
Select to see text scroll on the
screen.
Select Off or On.
Tone Settings
Select to adjust the radio tone. See
“ Tone Settings ” in AM-FM Radio
0 190 .
Auto Volume
This feature adjusts the volume
based on vehicle speed and
ambient noise.
Select Off, Low, Medium-Low,
Medium, Medium-High, or High.

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 0 381 .
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
Infotainment System 199.
Only USB storage devices
formatted in FAT16/32 or exFAT
file systems are recognized.
NTFS and other file systems are
not recognized.
.
The time it takes to process files
will depend on the USB storage
device type and capacity, and
the type of files stored.
.
Some USB storage device files
may not be compatible.
.
Up to two USB devices and one
iPod can be played through a
USB hub. All devices may not be
supported, depending on the
performance of the USB hub.
If there is not enough power
supply, it may not operate
normally.
.
Do not disconnect the USB
storage device while it is playing.
This may cause damage to the
product or affect the
performance of the USB device.
.
Disconnect the USB storage
device when the ignition is
turned off. If the ignition is turned
on while the USB device is connected, the USB device may
be damaged or may not operate
normally.
.
USB storage devices can only
be connected for playing music,
viewing photo files,
or upgrading.
.
Do not use the USB terminal to
charge USB accessory
equipment. The heat generated
may cause performance issues
or damage.
.
Music files to which Digital Right
Management (DRM) is applied
cannot be played.
.
USB storage device that are in
capacity with a limit of 5,000
files, such as music, photo,
video, 15 stages of folder
structure. Normal usage cannot
be guaranteed for a storage
device that exceeds this limit.
The iPod/iPhone can play all
music files that are supported.
The music file lists will only
display up to 5,000 files on the
screen. These files are sorted in
alphabetical order. .
Some iPod/iPhone product
models may not support the
connectivity or functionality of
this product.
.
Only connect the iPod/iPhone
with connection cables
supported by iPod/iPhone
products. Other connection
cables cannot be used.
.
The iPod/iPhone may be
damaged if it is connected to the
vehicle with the ignition on.
When not in use, disconnect the
iPod/iPhone.
.
When the iPod/iPhone is
connected to the USB port by
using the iPod/iPhone cable, the
Bluetooth music is not
supported.
.
The iPod/iPhone playback
functions and the information
displayed may be different when
played on the infotainment
system.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
202 Infotainment System .
Touch
g within two seconds of
the playback time to play the
previous file.
Returning to the Beginning of the
Current File
Touch
g after two seconds of the
playback time.
Scanning Forward or Backward
Touch and hold
g or
l during
playback to rewind or fast forward.
Release the button to resume
playback at normal speed.
Playing a File Randomly
Touch
Z during 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 ” in AM-FM Radio
0 190 .
Auto Volume
.
Touch Auto Volume. The Auto
Volume menu is displayed. See
“ Auto Volume ” in AM-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
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.