warning GMC YUKON DENALI 2016 Repair Manual

GMC Yukon Denali/Yukon XL Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-9159308) - 2016 - crc - 6/2/15
130 Instruments and Controls
been removed. See“Filling the
Tank with a Portable Gas Can”
under Filling the Tank 0244.
The diagnostic system can
detect if the adapter has been
left installed in the vehicle,
allowing fuel to evaporate into
the atmosphere. A few driving
trips with the adapter removed
may turn off the light.
. Poor fuel quality can cause
inefficient engine operation and
poor driveability, which may go
away once the engine is warmed
up. If this occurs, change the
fuel brand. It may require at
least one full tank of the proper
fuel to turn the light off. See Fuel
0 242.
If the light remains on, see your
dealer.
Emissions Inspection and
Maintenance Programs
If the vehicle requires an Emissions
Inspection/Maintenance test, the
test equipment will likely connect to
the vehicle's Data Link
Connector (DLC).
The DLC is under the instrument
panel to the left of the steering
wheel. Connecting devices that are
not used to perform an Emissions
Inspection/Maintenance test or to
service the vehicle may affect
vehicle operation See Add-On
Electrical Equipment 0259. See
your dealer if assistance is needed.
The vehicle may not pass
inspection if:
. The light is on when the engine
is running.
. The light does not come on
when the ignition is in Service
Only Mode.
. Critical emission control systems
have not been completely
diagnosed. If this happens, the
vehicle would not be ready for
inspection and might require
several days of routine driving before the system is ready for
inspection. This can happen if
the 12-volt battery has recently
been replaced or run down, or if
the vehicle has been recently
serviced.
See your dealer if the vehicle will
not pass or cannot be made ready
for the test.
Brake System Warning
Light
The vehicle brake system consists
of two hydraulic circuits. If one
circuit is not working, the remaining
circuit can still work to stop the
vehicle. For normal braking
performance, both circuits need to
be working.
If the warning light comes on, there
is a brake problem. Have the brake
system inspected right away.
MetricEnglish

GMC Yukon Denali/Yukon XL Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-9159308) - 2016 - crc - 6/2/15
Instruments and Controls 131
This light should come on briefly
when the engine is started. If it does
not come on then, have it fixed so it
will be ready to warn if there is a
problem.
When the ignition is on, the brake
system warning light also comes on
when the parking brake is set. The
light stays on if the parking brake
does not fully release. If it stays on
after the parking brake is fully
released, it means the vehicle has a
brake problem.
If the light comes on while driving,
pull off the road and stop carefully.
The pedal might be harder to push,
or the pedal can go closer to the
floor. It may take longer to stop.
If the light is still on, have the
vehicle towed for service. See
Towing the Vehicle0330.
{Warning
The brake system might not be
working properly if the brake
system warning light is on.
Driving with the brake system
(Continued)
Warning (Continued)
warning light on can lead to a
crash. If the light is still on after
the vehicle has been pulled off
the road and carefully stopped,
have the vehicle towed for
service.
Antilock Brake System
(ABS) Warning Light
This light comes on briefly when the
engine is started.
If the light does not come on, have it
fixed so it will be ready to warn if
there is a problem.
If the light comes on while driving,
stop as soon as it is safely possible
and turn off the vehicle. Then start
the engine again to reset the system. If the ABS light stays on,
or comes on again while driving, the
vehicle needs service. A chime may
also sound when the light comes on
steady.
If the ABS light is the only light on,
the vehicle has regular brakes, but
the antilock brakes are not
functioning.
If both the ABS and the brake
system warning light are on, the
vehicle's antilock brakes are not
functioning and there is a problem
with the regular brakes. See your
dealer for service.
See
Brake System Warning Light
0 130 andBrake System Messages
0 144.Four-Wheel-Drive Light

GMC Yukon Denali/Yukon XL Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-9159308) - 2016 - crc - 6/2/15
132 Instruments and Controls
The four-wheel-drive light comes on
when the transfer case is shifted
into four-wheel drive and the front
axle engages. LO or HI will also be
next to this light when the vehicle is
in four-wheel low or four-wheel high.
Some delay between the shifting
and the light coming on is normal.
SeeFour-Wheel Drive 0213.
Tow/Haul Mode Light
For vehicles with the Tow/Haul
Mode feature, this light comes on
when the Tow/Haul Mode has been
activated.
See Tow/Haul Mode 0212.
Lane Keep Assist (LKA)
Light
This light is green if LKA is available
to assist.
LKA may assist by gently turning
the steering wheel if the vehicle
approaches a detected lane marking
without using the turn signal in that
direction. The LKA light will turn
amber.
This light is amber and flashes as a
Lane Departure Warning (LDW)
alert, to indicate that the lane
marking has been crossed.
See Lane Keep Assist (LKA) 0240.
Vehicle Ahead Indicator
If equipped, this indicator will
display green when a vehicle is
detected ahead and amber when
you are following a vehicle ahead
much too closely.
See Forward Collision Alert (FCA)
System 0234.
Traction Off Light
This light comes on briefly while
starting the engine. If it does not,
have the vehicle serviced by your

GMC Yukon Denali/Yukon XL Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-9159308) - 2016 - crc - 6/2/15
Instruments and Controls 133
dealer. If the system is working
normally, the indicator light then
turns off.
The traction off light comes on when
the Traction Control System (TCS)
has been turned off by pressing and
releasing the TCS/StabiliTrak
button.
This light and the StabiliTrak OFF
light come on when StabiliTrak is
turned off.
If the TCS is off, wheel spin is not
limited. Adjust driving accordingly.
SeeTraction Control/Electronic
Stability Control 0218.
StabiliTrak®OFF Light
This light comes on briefly while
starting the engine. If it does not,
have the vehicle serviced by your
dealer. This light comes on when the
StabiliTrak system is turned off.
If StabiliTrak is off, the Traction
Control System (TCS) is also off.
If the StabiliTrak and TCS are off,
the system does not assist in
controlling the vehicle. Turn on the
TCS and the StabiliTrak systems
and the warning light turns off.
See
Traction Control/Electronic
Stability Control 0218.
Traction Control System
(TCS)/StabiliTrak®Light
This light comes on briefly when the
engine is started.
If the light does not come on, have
the vehicle serviced by your dealer.
If the system is working normally,
the indicator light turns off. If the light is on and not flashing, the
TCS and potentially the StabiliTrak
system have been disabled. A DIC
message may display. Check the
DIC messages to determine which
feature(s) is no longer functioning
and whether the vehicle requires
service.
If the light is on and flashing, the
TCS and/or the StabiliTrak system
is actively working.
See
Traction Control/Electronic
Stability Control 0218.
Engine Coolant
Temperature Warning
Light
This light comes on briefly while
starting the vehicle.

GMC Yukon Denali/Yukon XL Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-9159308) - 2016 - crc - 6/2/15
134 Instruments and Controls
If it does not, have the vehicle
serviced by your dealer. If the
system is working normally the
indicator light goes off.
Caution
The engine coolant temperature
warning light indicates that the
vehicle has overheated. Driving
with this light on can damage the
engine and it may not be covered
by the vehicle warranty. See
Engine Overheating0273.
The engine coolant temperature
warning light comes on when the
engine has overheated.
If this happens, pull over and turn
off the engine as soon as possible.
See Engine Overheating 0273.
Tire Pressure Light
For vehicles with the Tire Pressure
Monitor System (TPMS), this light
comes on briefly when the engine is
started. It provides information
about tire pressures and the TPMS.
When the Light Is On Steady
This indicates that one or more of
the tires are significantly
underinflated.
A Driver Information Center (DIC)
tire pressure message may also
display. See Tire Messages 0152.
Stop as soon as possible, and
inflate the tires to the pressure value
shown on the Tire and Loading
Information label. See Tire Pressure
0 303. When the Light Flashes First and
Then Is On Steady
If the light flashes for about a minute
and then stays on, there may be a
problem with the TPMS. If the
problem is not corrected, the light
will come on at every ignition cycle.
See
Tire Pressure Monitor
Operation 0306.
Engine Oil Pressure Light
Caution
Lack of proper engine oil
maintenance can damage the
engine. Driving with the engine oil
low can also damage the engine.
The repairs would not be covered
by the vehicle warranty. Check
the oil level as soon as possible.
Add oil if required, but if the oil
level is within the operating range
and the oil pressure is still low,
have the vehicle serviced. Always
follow the maintenance schedule
for changing engine oil.

GMC Yukon Denali/Yukon XL Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-9159308) - 2016 - crc - 6/2/15
Instruments and Controls 135
This light should come on briefly as
the engine is started. If it does not
come on, have the vehicle serviced
by your dealer.
If the light comes on and stays on, it
means that oil is not flowing through
the engine properly. The vehicle
could be low on oil and might have
some other system problem. See
your dealer.
Low Fuel Warning Light
This light is near the fuel gauge and
comes on briefly when the ignition is
turned on as a check to show it is
working.It also comes on when the fuel tank
is low on fuel. The light turns off
when fuel is added. If it does not,
have the vehicle serviced.
Security Light
The security light should come on
briefly as the engine is started. If it
does not come on, have the vehicle
serviced by your dealer. If the
system is working normally, the
indicator light turns off.
If the light stays on and the engine
does not start, there could be a
problem with the theft-deterrent
system. See
Immobilizer Operation
0 43.
High-Beam On Light
This light comes on when the
high-beam headlamps are in use.
See Headlamp High/Low-Beam
Changer 0166.
IntelliBeam®Light
This light comes on when the
IntelliBeam system, if equipped, is
enabled.
See Exterior Lamp Controls 0165.

GMC Yukon Denali/Yukon XL Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-9159308) - 2016 - crc - 6/2/15
140 Instruments and Controls
Transmission Fluid Temperature
Gauge :Shows the temperature of
the automatic transmission fluid in
either degrees Celsius (°C) or
degrees Fahrenheit (°F).
Head-Up Display (HUD)
{Warning
If the HUD image is too bright or
too high in your field of view, it
may take you more time to see
things you need to see when it is
dark outside. Be sure to keep the
HUD image dim and placed low in
your field of view.
If equipped with HUD, some
information concerning the
operation of the vehicle is projected
onto the windshield. The image is
projected through the HUD lens on
top of the instrument panel. The
information appears as an image
focused out toward the front of the
vehicle.
Caution
If you try to use the HUD image
as a parking aid, you may
misjudge the distance and
damage your vehicle. Do not use
the HUD image as a parking aid.
The HUD information can be
displayed in various languages. The
speedometer reading and other
numerical values can be displayed
in either English or metric units.
The language selection is changed
through the radio and the units of
measurement is changed through
the instrument cluster. See Vehicle
Personalization 0155 and“Cluster
Settings Menu” underInstrument
Cluster 0120.
HUD Display on the Vehicle
Windshield
The HUD may display some of the
following vehicle information and
vehicle messages or alerts:
. Speed
. Tachometer
. Audio
. Phone
. Navigation
. Collision Alert
. Cruise Control
. Lane Departure
. Low Fuel

GMC Yukon Denali/Yukon XL Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-9159308) - 2016 - crc - 6/2/15
Instruments and Controls 141
Some vehicle messages or alerts
displayed in the HUD may be
cleared by using the steering wheel
controls. SeeVehicle Messages
0 143.
Some information shown may not
be available on your vehicle if it is
not equipped with these features.
The HUD control is to the left of the
steering wheel.
To adjust the HUD image: 1. Adjust the driver seat.
2. Start the engine.
3. Use the following settings to adjust the HUD.
$(Image Adjustment) : Press
down or lift up to center the HUD
image. The HUD image can only be
adjusted up and down, not side
to side.
!(Display View) : Press to
select the display view. Each press
will change the display view.
D(Image Brightness) : Lift up
and hold to brighten the display.
Press down and hold to dim the
display. Hold down to turn the
display off.
The HUD image will automatically
dim and brighten to compensate for
outside lighting. The HUD
brightness control can also be
adjusted as needed.
The HUD image can temporarily
light up depending on the angle and
position of the sunlight on the HUD
display. This is normal.
Polarized sunglasses could make
the HUD image harder to see. HUD Views
There are four views in the HUD.
Some vehicle information and
vehicle messages or alerts may be
displayed in any view.
Metric
English
Speed View : This display gives the
speedometer reading (in English or
metric units), speed limit, Adaptive
Cruise Control speed, Lane
Departure Warning, and vehicle
ahead indicator. Some information
only appears on vehicles that have
these features, and when they are
active.

GMC Yukon Denali/Yukon XL Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-9159308) - 2016 - crc - 6/2/15
148 Instruments and Controls
REMOTE LEFT IN VEHICLE
This message displays when
leaving the vehicle with the RKE
transmitter still inside.
REPLACE BATTERY IN
REMOTE KEY
This message displays when the
battery in the RKE transmitter needs
to be replaced.
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
AUTOMATIC COLLISION
PREP OFF
This message displays when the
Front Automatic Braking (FAB)
System has been turned off. See
Front Automatic Braking (FAB)
System0236.
AUTOMATIC COLLISION PREP
REDUCED
This message displays when the
Front Automatic Braking (FAB)
System has been set to the Alert
setting. This setting disables most
FAB functions. Some last-second
automatic braking capability is still
provided with the Alert setting, but
braking is less likely to occur. See
Front Automatic Braking (FAB)
System 0236.
AUTOMATIC COLLISION PREP
UNAVAILABLE
This message displays when the
Front Automatic Braking (FAB)
System has been unavailable for
some time. The FAB System does
not need service. This message can
display under the following
conditions:
.
The front of the vehicle or
windshield is not clean. Keep
these areas clean and free of
mud, dirt, snow, ice, and slush.
For cleaning instructions, see
Exterior Care 0334. .
Heavy rain or snow is interfering
with the object detection
performance.
This message may also be
displayed if there is a problem with
the StabiliTrak system. See Traction
Control/Electronic Stability Control
0 218.
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 Keep Assist (LKA)
and the Lane Departure Warning
(LDW) system will not operate.
Forward Collision Alert (FCA) and
Front Automatic Braking (FAB) may
not work or may not work as well.

GMC Yukon Denali/Yukon XL Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-9159308) - 2016 - crc - 6/2/15
Instruments and Controls 149
LANE CHANGE ALERT OFF
This message indicates that the
driver has turned the Side Blind
Zone Alert (SBZA) and Lane
Change Alert (LCA) systems off.
LANE KEEPING ASSIST
UNAVAILABLE
This message displays when the
Lane Keep Assist (LKA) and Lane
Departure Warning (LDW) system is
temporarily unavailable. The LKA
system does not need service.
This message could be due to the
camera being blocked. Clean the
outside of the windshield behind the
rearview mirror.
PARK ASSIST OFF
This message displays when the
Parking Assist system has been
turned off or when there is a
temporary condition causing the
system to be disabled.
SERVICE AUTOMATIC
COLLISION PREP
If this message displays, take the
vehicle to your dealer to repair the
system. Adaptive Cruise Control
(ACC), Forward Collision Alert
(FCA), and/or the Front Automatic
Braking (FAB) System may not
work. Do not use these systems
until the vehicle has been repaired.
SERVICE FRONT CAMERA
If this message remains on after
continued driving, the vehicle needs
service. Do not use the Lane Keep
Assist (LKA), Lane Departure
Warning (LDW), Front Automatic
Braking (FAB), and Forward
Collision Alert (FCA) features. Take
the vehicle to your dealer.
SERVICE PARK ASSIST
This message displays if there is a
problem with the Parking Assist
system. Do not use this system to
help you park. See your dealer for
service.
SERVICE SIDE DETECTION
SYSTEM
If this message remains on after
continued driving, the vehicle needs
service. Side Blind Zone Alert
(SBZA), Lane Change Alert (LCA),
and Rear Cross Traffic Alert (RCTA)
features will not work. Take the
vehicle to your dealer.
SIDE DETECTION SYSTEM
UNAVAILABLE
This message indicates that Side
Blind Zone Alert (SBZA), Lane
Change Alert (LCA), and Rear
Cross Traffic Alert (RCTA) are
disabled either because the sensor
is blocked and cannot detect
vehicles in the blind zone, or the
vehicle is passing through an open
area, such as the desert, where
there is insufficient data for
operation. This message may also
activate during heavy rain or due to
road spray. The vehicle does not
need service. For cleaning, see
"Washing the Vehicle" under
Exterior Care0334.