2015 GMC SIERRA DENALI light

Black plate (27,1)GMC 2015i Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-8431500) - 2015 - crc - 6/20/14
Instruments and Controls 5-27
Cruise Control Light
For vehicles with cruise control, the
cruise control light is white when the
cruise control is on and ready, and
turns green when the cruise control
is set and active.
The light turns off when the cruise
control is turned off. See Cruise
Control on page 9-52 . Door Ajar Light
This light comes on when a door is
open or not securely latched. Before
driving, check that all doors are
properly closed.
Information Displays Driver Information
Center (DIC) The DIC displays are shown in the
center of the instrument cluster in
the Info App. See Instrument Cluster
on page 5-9 . The displays show the
status of many vehicle systems. The
controls for the DIC are on the right
steering wheel control.
w or
x : Press to move up or
down in a list.

Black plate (28,1)GMC 2015i Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-8431500) - 2015 - crc - 6/20/14
5-28 Instruments and Controls
o or
p : Press to move between
the interactive display zones in the
cluster.
V (Set/Reset): Press to open a
menu or select a menu item. Press
and hold to reset values on certain
screens.
DIC Info Page Options The info pages on the DIC can be
turned on or off through the
Settings menu.
1. Press
o to access the cluster
applications.
2. Press
w or
x to scroll to the
Settings application.
3. Press
V to enter the
Settings 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 Settings
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.
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.

Black plate (32,1)GMC 2015i Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-8431500) - 2015 - crc - 6/20/14
5-32 Instruments and Controls SERVICE BATTERY
CHARGING SYSTEM On some vehicles, this message
displays if there is a problem with
the battery charging system. Under
certain conditions, the charging
system light may also turn on in the
instrument cluster. See Charging
System Light on page 5-18 . Driving
with this problem could drain the
battery. Turn off all unnecessary
accessories. Have the electrical
system checked as soon as
possible. See your dealer.
TRANSPORT MODE ON This message is displayed when the
vehicle is in transport mode. Some
features can be disabled while in
this mode, including Remote
Keyless Entry (RKE), remote start,
and the vehicle alarm system. Take
the vehicle to your dealer for service
to turn transport mode off. Brake System Messages BRAKE FLUID LOW This message is displayed when the
brake fluid level is low. See Brake
Fluid on page 10-27 .
SERVICE BRAKE ASSIST This message may be displayed
when there is a problem with the
brake boost assist system. When
this message is displayed, the brake
boost assist motor might be heard
operating and you might notice
pulsation in the brake pedal. This is
normal under these conditions. Take
the vehicle to your dealer for
service.
SERVICE TRAILER BRAKE
SYSTEM
On vehicles with the Integrated
Trailer Brake Control (ITBC) system,
this message displays and a chime
may sound when there is a problem
with the ITBC system. When this message displays, power
is no longer available to the trailer
brakes.
As soon as it is safe to do so,
carefully pull your vehicle over to
the side of the road and turn the
ignition off. Check the wiring
connection to the trailer and turn the
ignition back on. If this message still
displays, either your vehicle or the
trailer needs service. See your
dealer.
See “ Integrated Trailer Brake
Control System ” under Towing
Equipment on page 9-78 for more
information.
Compass Messages Dashes may be displayed if the
vehicle temporarily loses
communication with the Global
Positioning System (GPS).

Black plate (35,1)GMC 2015i Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-8431500) - 2015 - crc - 6/20/14
Instruments and Controls 5-35
Fuel System Messages FUEL LEVEL LOW This message displays and a chime
may sound if the fuel level is low.
Refuel as soon as possible. See
Fuel Gauge on page 5-12 and Fuel
on page 9-63 .
TIGHTEN GAS CAP This message may display along
with the malfunction indicator lamp
on the instrument cluster if the
vehicle's fuel cap is not tightened
properly. See Malfunction Indicator
Lamp on page 5-18 . Reinstall the
fuel cap fully. See Filling the Tank
on page 9-66 . The diagnostic
system can determine if the fuel cap
has been left off or improperly
installed. A loose or missing fuel
cap allows fuel to evaporate into the
atmosphere. A few driving trips with
the cap properly installed should
turn this light and message off. Key and Lock Messages REPLACE BATTERY IN
REMOTE KEY This message displays if a Remote
Keyless Entry (RKE) transmitter
battery is low. The battery needs to
be replaced in the transmitter. See
“ Battery Replacement ” under
Remote Keyless Entry (RKE)
System Operation on page 2-4 .
Lamp Messages TURN SIGNAL ON This message displays and a chime
sounds if a turn signal is left on for
1.2 km (0.75 mi). Move the turn
signal lever to the off position. Object Detection System
Messages FORWARD COLLISION
ALERT OFF This message displays when the
Forward Collision Alert has been
turned off.
FRONT CAMERA BLOCKED
CLEAN WINDSHIELD This message displays when the
camera is blocked. Cleaning the
outside of the windshield behind the
rearview mirror may correct the
issue. The Lane Departure Warning
(LDW) system and Forward
Collision Alert (FCA) will not
operate.
LANE DEPARTURE WARNING
UNAVAILABLE
This message displays when
attempting to activate the Lane
Departure Warning (LDW) system

Black plate (37,1)GMC 2015i Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-8431500) - 2015 - crc - 6/20/14
Instruments and Controls 5-37TRACTION CONTROL OFF This message displays when the
traction control has been turned off.
See Traction Control/Electronic
Stability Control on page 9-49 .
TRACTION CONTROL ON This message displays when the
traction control is active. See
Traction Control/Electronic Stability
Control on page 9-49 .
STABILITRAK OFF This message displays when the
StabiliTrak system has been turned
off. Adjust your driving accordingly.
To limit wheel spin and realize the
full benefits of the stability
enhancement system, you should
normally leave StabiliTrak on. See
Traction Control/Electronic Stability
Control on page 9-49 . STABILITRAK OFF may also
display when the stability control
has been automatically disabled.
The following conditions can cause
this message to appear: .
The system is overheating,
which could occur if StabiliTrak
activates continuously for an
extended period of time. .
The brake system warning light
is on. See Brake System
Warning Light on page 5-21 ..
The stability system takes longer
than usual to complete its
diagnostic checks due to driving
conditions. .
An engine or vehicle-related
problem has been detected and
the vehicle needs service. See
your dealer. .
The transfer case is in
Four-Wheel Drive Low.
The message turns off as soon as
the conditions that caused the
message to be displayed are no
longer present. Airbag System Messages SERVICE AIRBAG This message displays if there is a
problem with the airbag system.
Take the vehicle to your dealer for
service.
Safety Belt Messages SHIFTER LOCKED. BUCKLE
SEATBELT This message displays if the vehicle
is equipped with the Safety Belt
Assurance System and the driver
and front outboard passenger,
if present, safety belts are not
buckled. The vehicle will not shift
out of P (Park). Buckle the safety
belt(s) to unlock the shift lever.
This system may not allow the
vehicle to shift out of P (Park) if an
object - such as a briefcase,
handbag, grocery bag, laptop,
or other electronic device - is on the
front outboard passenger seat.

Black plate (38,1)GMC 2015i Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-8431500) - 2015 - crc - 6/20/14
5-38 Instruments and Controls If this happens, remove the object
from the seat or buckle the
safety belt.
If the driver or front outboard
passenger unbuckles their safety
belt while driving, the safety belt
reminder chime and light(s) will
come on. See Safety Belt
Reminders on page 5-15 .
SHIFTER UNLOCKED. BRAKE
TO SHIFT This message displays when the
Safety Belt Assurance System times
out and allows the vehicle to be
shifted out of P (Park) after
30 seconds following brake apply.
See “ Safety Belts ” and “ Child
Restraints ” in the Index for
information about the importance of
proper restraint use.
This system may not function
properly if the airbag readiness light
is on. See Airbag Readiness Light
on page 5-16 . Security Messages SERVICE THEFT DETERRENT
SYSTEM This message displays when there
is a problem with the theft-deterrent
system. The vehicle may or may not
restart, so you may want to take the
vehicle to your dealer before turning
off the engine. See Immobilizer
Operation on page 2-13 .
Steering System
Messages STEERING ASSIST IS
REDUCED DRIVE WITH CARE This message may display if a
problem occurs with the electric
power steering system. If this
message appears, steering effort
may be slightly higher than normal.
The vehicle is still safe to drive. Use
caution while in reduced assist
mode. If this message is persistent or appears repeatedly, take the
vehicle to your dealer for service.
See Steering on page 9-4 .
SERVICE POWER STEERING This message displays when there
is a problem with electric power
steering. Take the vehicle to your
dealer for service. See Steering on
page 9-4 .
Tire Messages SERVICE TIRE MONITOR
SYSTEM If equipped with the Tire Pressure
Monitor System (TPMS), this
message displays if a part on the
system is not working properly. The
tire pressure light also flashes and
then remains on during the same
ignition cycle. See Tire Pressure
Light on page 5-25 . Several
conditions may cause this message
to appear. See Tire Pressure
Monitor Operation on page 10-62 .

Black plate (39,1)GMC 2015i Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-8431500) - 2015 - crc - 6/20/14
Instruments and Controls 5-39If the warning comes on and stays
on, there may be a problem with the
TPMS. See your dealer.
TIRE LEARNING ACTIVE If equipped with the Tire Pressure
Monitor System (TPMS), this
message displays when the system
is relearning the tire positions on
your vehicle. The tire positions must
be relearned after rotating the tires
or after replacing a tire or sensor.
See Tire Inspection on page 10-65 ,
Tire Rotation on page 10-65 , Tire
Pressure Monitor System on
page 10-61 , and Tire Pressure on
page 10-59 . TIRE PRESSURE LOW ADD
AIR TO TIRE If equipped with the Tire Pressure
Monitor System (TPMS), this
message displays when the
pressure in one or more of the
vehicle's tires is low. This message
also displays with a vehicle picture
to indicate the location of the low
tire. The low tire pressure warning
light will also come on. See Tire
Pressure Light on page 5-25 . You
can receive more than one tire
pressure message at a time. If a tire
pressure message appears on the
DIC, stop as soon as you can. Have
the tire pressures checked and set
to those shown on the Tire and
Loading Information label. See Tires
on page 10-50 , Vehicle Load Limits
on page 9-15 , and Tire Pressure on
page 10-59 . The DIC also shows
the tire pressure values. See Driver
Information Center (DIC) on
page 5-27 . Transmission Messages 4WD OFF If equipped with four-wheel drive,
this message displays when the
four-wheel-drive system is
temporarily disabled due to an
overheated condition. The vehicle
will run in two-wheel drive when this
message is present. Once the
four-wheel-drive system cools down,
the message turns off and the
four-wheel-drive system returns to
normal operation.
4WD SHIFT IN PROGRESS This message will display while the
four-wheel-drive system is shifting.
FOR 4WD LOW SHIFT TO
NEUTRAL
If a four-wheel drive shift into 4
n is
requested, and the vehicle speed is
correct, but the transmission is not
in N (Neutral), this message will
display until the transmission is
shifted to N (Neutral).

Black plate (45,1)GMC 2015i Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-8431500) - 2015 - crc - 6/20/14
Instruments and Controls 5-45adjusted to this level. To set the
maximum startup volume, press +
or − to increase or decrease.
Vehicle Select and the following may
display: .
Climate and Air Quality .
Collision/Detection Systems .
Comfort and Convenience .
Lighting .
Power Door Locks .
Remote Lock, Unlock, Start
Climate and Air Quality Select the Climate and Air Quality
menu and the following may display: .
Auto Fan Max Speed .
Auto Rear Defog
Auto Fan Max Speed
This feature will set the maximum
auto fan speed.
Select Low, Medium, or High. Auto Rear Defog
If equipped, this feature will
automatically turn on the rear
window defogger when it is cold
outside.
Select Off or On.
Collision/Detection Systems Select the Collision/Detection
Systems menu and the following
may display: .
Alert Type .
Auto Collision Preparation .
Park Assist
Alert Type
This feature will set crash alerts to
beeps or seat vibrations. This
setting affects all crash alerts
including Forward Collision Alert,
Lane Departure Warning, and Park
Assist alerts.
Select Beeps or Safety Alert Seat. Auto Collision Preparation
This feature will turn on or off the
Forward Collision Alert feature as
well as the automatic braking
capability of the Auto Collision
Preparation feature. With the Alert
and Brake setting, both Forward
Collision Alert as well as the
automatic braking capability of the
Auto Collision Preparation feature
are available. The Alert setting
disables most automatic braking
functions of the Auto Collision
Preparation feature. Some
last-second automatic braking
capability is still provided with the
Alert setting, but it is much less
likely to be triggered by most driving
conditions. Off disables all Forward
Collision Alert and automatic
braking capabilities of the Auto
Collision Preparation feature.
Select Off, Alert and Brake, or Alert.
See Object Detection System
Messages on page 5-35 .