2018 GMC YUKON warning

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - CRC - 11/3/17
Instruments and Controls 151
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 Driver Information Center (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 0234.
Engine Coolant
Temperature Warning
Light
This light comes on briefly while
starting the vehicle.
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
(Continued)
Caution (Continued)
engine and it may not be covered
by the vehicle warranty. See
Engine Overheating0298.
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 0298.
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.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - CRC - 11/3/17
152 Instruments and Controls
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. Stop as soon as possible,
and inflate the tires to the pressure
value shown on the Tire and
Loading Information label. SeeTire
Pressure 0331.
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 0334.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.
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.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - CRC - 11/3/17
Instruments and Controls 157
Top Consumers :Shows a list of
the features that are currently
impacting the fuel economy, in order
from highest to lowest. If a feature is
turned off, it will be removed from
the list.
Economy 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
Vto clear the graph
or press
pto reset through
the menu.
ECO Index : Provides feedback on
the efficiency of current driving
behavior. The bar 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 0218. Engine Hours :
Shows the total
number of hours the engine has run.
This display also shows the engine
idle hours.
Trailer Brake : Displays on vehicles
with the Integrated Trailer Brake
Control (ITBC) system.
TRAILER GAIN shows the trailer
gain setting.
OUTPUT shows the power output to
the trailer any time a trailer with
electric brakes is connected. Output
is displayed in 0 to 10 bars. Dashes
may appear in the OUTPUT display
if a trailer is not connected.
Speed Signs : Shows sign
information, which comes from a
roadway database in the onboard
navigation.
Off Road : Displays vehicle pitch
and roll information, road wheel
angle, and four-wheel drive (4WD)
status. Following Distance :
Used to
select the alert timing for the
Forward Collision Alert (FCA). See
Forward Collision Alert (FCA)
System 0250.
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).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

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - CRC - 11/3/17
Instruments and Controls 159
$:Press down or lift up to center
the HUD image. The HUD image
can only be adjusted up and down,
not side to side.
!: Press to select the display
view. Each press will change the
display view.
D: 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.
Head-Up Display (HUD) Rotation
Option
This feature allows for adjusting the
angle of the HUD image. Press
@on the steering wheel
controls while Head-up Display
Rotation is highlighted to enter
Adjust Mode. Press
yorzto
adjust the angle of the HUD display.
Press
SorTto highlight OK, then
press
@to save the setting.
CANCEL can also be selected to
cancel the setting. The vehicle must
be in P (Park). See Instrument
Cluster 0136.
Press
@on the steering wheel
controls while Head-up Display
Rotation is highlighted to enter
Adjust Mode. Press
yorzto
adjust the angle of the HUD display.
Press
SorTto highlight OK, then
press
@to save the setting.
CANCEL can also be selected to
cancel the setting. The vehicle must
be in P (Park). See Instrument
Cluster 0136. 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

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - CRC - 11/3/17
164 Instruments and Controls
Select Off or On.
Auto Volume
This feature adjusts the volume
based on vehicle speed and
ambient noise.
Select Off, Low, Medium-Low,
Medium, Medium-High, or High.
Maximum Startup Volume
This feature sets the maximum
startup volume. If the vehicle is
started and the volume is greater
than this level, the volume is
adjusted to this level. To set the
maximum startup volume, touch +
or−to increase or decrease.
Audio Cue Volume
This feature sets the volume of
audio files played at system startup
and shutdown.
Select On, then touch + or −to
increase or decrease the volume.
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 and the following may
display:
.Auto Fan Speed
. Auto Defog
. Auto Rear Defog
Auto Fan Speed
This feature will set the auto fan
speed.
Select Low, Medium, or High.
Auto Defog
When set to On, the auto defog
comes on when the climate control
sensor detects high interior
humidity. Air will be directed to the
windshield.
Select Off or On. Auto Rear Defog
This feature will automatically turn
on the rear window defogger when
the vehicle is first started in cold
weather and turn off when the
vehicle is warmed.
Select Off or On.Collision/Detection Systems
Select and the following may
display:
.
Alert Type
. Forward Collision System
. Adaptive Cruise Go Notifier
. Park Assist
. Side Blind Zone Alert
. Rear Cross Traffic Alert
. Lane Change Alert
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.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - CRC - 11/3/17
174 Lighting
Lighting
Exterior Lighting
Exterior Lamp Controls . . . . . . . 174
Exterior Lamps OffReminder . . . . . . . . . . . . . . . . . . . 176
Headlamp High/Low-Beam Changer . . . . . . . . . . . . . . . . . . . . 176
Flash-to-Pass . . . . . . . . . . . . . . . . 176
Daytime Running Lamps (DRL) . . . . . . . . . . . . . . . 177
Automatic Headlamp System . . . . . . . . . . . . . . . . . . . . . . 177
Hazard Warning Flashers . . . . . 178
Turn and Lane-Change Signals . . . . . . . . . . . . . . . . . . . . . . 178
Fog Lamps . . . . . . . . . . . . . . . . . . . 179
Interior Lighting
Instrument Panel Illumination Control . . . . . . . . . . . . . . . . . . . . . . 180
Dome Lamps . . . . . . . . . . . . . . . . . 180
Reading Lamps . . . . . . . . . . . . . . 180
Lighting Features
Entry Lighting . . . . . . . . . . . . . . . . 181
Exit Lighting . . . . . . . . . . . . . . . . . . 181
Battery Load Management . . . 181
Battery Power Protection . . . . . 182
Exterior Lighting Battery Saver . . . . . . . . . . . . . . . . . . . . . . . 182Exterior Lighting
Exterior Lamp Controls
The exterior lamp control is on the
instrument panel to the left of the
steering wheel.
There are four positions:
O: Turns off the automatic
headlamps and Daytime Running
Lamps (DRL). Turn the headlamp
control to
Oagain to turn the
automatic headlamps or DRL
back on.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - CRC - 11/3/17
178 Lighting
is in the full bright position. See
Instrument Panel Illumination
Control0180.
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 to
Oor 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.
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.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - CRC - 11/3/17
192 Driving and Operating
Driving and
Operating
Driving Information
Distracted Driving . . . . . . . . . . . . 193
Defensive Driving . . . . . . . . . . . . . 194
Drunk Driving . . . . . . . . . . . . . . . . . 194
Control of a Vehicle . . . . . . . . . . . 194
Braking . . . . . . . . . . . . . . . . . . . . . . . 194
Steering . . . . . . . . . . . . . . . . . . . . . . 195
Off-Road Recovery . . . . . . . . . . . 195
Loss of Control . . . . . . . . . . . . . . . 196
Off-Road Driving . . . . . . . . . . . . . 196
Driving on Wet Roads . . . . . . . . 201
Hill and Mountain Roads . . . . . 202
Winter Driving . . . . . . . . . . . . . . . . 202
If the Vehicle Is Stuck . . . . . . . . 203
Vehicle Load Limits . . . . . . . . . . . 204
Starting and Operating
New Vehicle Break-In . . . . . . . . . 209
Adjustable Throttle and BrakePedal . . . . . . . . . . . . . . . . . . . . . . . 209
Ignition Positions (Keyless Access) . . . . . . . . . . . . . . . . . . . . . 210
Ignition Positions (Key Access) . . . . . . . . . . . . . . . . . . . . . 212
Starting the Engine . . . . . . . . . . . 213 Engine Heater . . . . . . . . . . . . . . . . 215
Retained Accessory
Power (RAP) . . . . . . . . . . . . . . . . 216
Shifting Into Park . . . . . . . . . . . . . 217
Shifting out of Park . . . . . . . . . . . 218
Parking over Things That Burn . . . . . . . . . . . . . . . . . . . 218
Active Fuel Management . . . . . 218
Extended Parking . . . . . . . . . . . . 219
Engine Exhaust
Engine Exhaust . . . . . . . . . . . . . . 219
Running the Vehicle While Parked . . . . . . . . . . . . . . . . . . . . . . 220
Automatic Transmission
Automatic Transmission . . . . . . 220
Manual Mode . . . . . . . . . . . . . . . . . 223
Tow/Haul Mode . . . . . . . . . . . . . . . 225
Drive Systems
Four-Wheel Drive . . . . . . . . . . . . . 226
Brakes
Antilock BrakeSystem (ABS) . . . . . . . . . . . . . . . 231
Parking Brake . . . . . . . . . . . . . . . . 232
Brake Assist . . . . . . . . . . . . . . . . . . 233
Hill Start Assist (HSA) . . . . . . . . 233
Ride Control Systems
Traction Control/Electronic Stability Control . . . . . . . . . . . . . 234
Hill Descent Control (HDC) . . . 236
Magnetic Ride Control . . . . . . . . 236
Locking Rear Axle . . . . . . . . . . . . 237
Automatic Level Control . . . . . . 237
Cruise Control
Cruise Control . . . . . . . . . . . . . . . . 237
Adaptive Cruise Control . . . . . . 240
Driver Assistance Systems
Driver Assistance Systems . . . 247
Assistance Systems for Parking or Backing . . . . . . . . . . 248
Assistance Systems for Driving . . . . . . . . . . . . . . . . . . . . . . 250
Forward Collision Alert (FCA) System . . . . . . . . . . . . . . . . . . . . . . 250
Forward Automatic Braking (FAB) . . . . . . . . . . . . . . . 253
Side Blind Zone Alert (SBZA) . . . . . . . . . . . . . . . . 254
Lane Change Alert (LCA) . . . . . 255
Lane Departure Warning (LDW) . . . . . . . . . . . . . 256
Lane Keep Assist (LKA) . . . . . . 257