2020 GMC YUKON brake

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-13566587) - 2020 - CRC - 4/15/19
138 Instruments and Controls
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
MetricEnglish
This light should come on briefly
when the vehicle is turned on. If it
does not come on then, have it fixed
so it will be ready to warn you if
there is a problem.
When the vehicle 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, there is a brake problem.
Have the brake system inspected
right away.
If the light comes on while driving,
pull off the road and stop carefully.
The brake pedal might be harder to
push, or the brake pedal may go
closer to the floor. It could take
longer to stop. If the light is still on,
have the vehicle towed for service.
See
Towing the Vehicle 0363.
{Warning
The brake system might not be
working properly if the brake
system warning light is on.
Driving with the brake system
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 warning light should come on
briefly when the vehicle is turned
on. 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,
safely stop as soon as it is possible
and turn off the vehicle. Then turn
on the vehicle again to reset the
system.
If the ABS warning light stays on,
or comes on again while driving, the
vehicle needs service. A chime may
also sound when the light stays on.
If the ABS warning light is the only
light on, the vehicle has regular
brakes, but ABS is not functioning.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-13566587) - 2020 - CRC - 4/15/19
Instruments and Controls 139
If both the ABS warning light and
the brake system warning light are
on, ABS is not functioning and there
is a problem with the regular brakes.
See your dealer for service.
SeeBrake System Warning Light
0 138.
Four-Wheel-Drive Light
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.
See Four-Wheel Drive 0219.
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 0218.
Lane Keep Assist (LKA)
Light
After the vehicle is started, this light
turns off and stays off if LKA has not
been turned on or is unavailable. If available, this light is white if LKA
is turned on, but not ready to assist.
This light is green if LKA is turned
on and is ready to assist.
LKA may assist by gently turning
the steering wheel if the vehicle
approaches a detected lane
marking. The LKA light is amber
when assisting.
This light flashes amber as a Lane
Departure Warning (LDW) alert, to
indicate that the lane marking has
been crossed.
LKA will not assist or alert if the turn
signal is active in the direction of
lane departure, or if LKA detects
that you are accelerating, braking,
or actively steering.
See
Lane Keep Assist (LKA) 0251.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-13566587) - 2020 - CRC - 4/15/19
Instruments and Controls 147
best fuel economy and average fuel
economy. This display can also be
reset by selecting reset in the menu.
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 0211.
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 0245.
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-13566587) - 2020 - CRC - 4/15/19
Instruments and Controls 151
HUD Troubleshooting
If you cannot see the HUD image
when the ignition is on, check that:
.Nothing is covering the
HUD lens.
. The HUD brightness setting is
not too dim or too bright.
. The HUD is adjusted to the
proper height.
. Polarized sunglasses are
not worn.
. The windshield and HUD lens
are clean.
If the HUD image is not correct,
contact your dealer.
The windshield is part of the HUD
system. See Windshield
Replacement 0310.
Vehicle Messages
Messages displayed on the DIC
indicate the status of the vehicle or
some action that may be needed to
correct a condition. Multiple
messages may appear one after
another.
The messages that do not require
immediate action can be
acknowledged and cleared by
pressing
V. The messages that
require immediate action cannot be
cleared until that action is
performed.
All messages should be taken
seriously; clearing the message
does not correct the problem.
If a SERVICE message appears,
see your dealer.
Follow the instructions given in the
messages. The system displays
messages regarding the following
topics:
. Service Messages
. Fluid Levels
. Vehicle Security .
Brakes
. Steering
. Ride Control Systems
. Driver Assistance Systems
. Cruise Control
. Lighting and Bulb Replacement
. Wiper/Washer Systems
. Doors and Windows
. Seat Belts
. Airbag Systems
. Engine and Transmission
. Tire Pressure
. Battery
Engine Power Messages
ENGINE POWER IS REDUCED
This message displays when the
vehicle's propulsion power is
reduced. A reduction in propulsion
power can affect the vehicle's ability
to accelerate. If this message is on,
but there is no observed reduction
in performance, proceed to your
destination. The performance may

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-13566587) - 2020 - CRC - 4/15/19
152 Instruments and Controls
be reduced the next time the vehicle
is driven. The vehicle may be driven
while this message is on, but
maximum acceleration and speed
may be reduced. Anytime this
message stays on, or displays
repeatedly, the vehicle should be
taken to your dealer for service as
soon as possible.
Under certain operating conditions,
propulsion will be disabled. Try
restarting after the vehicle has been
off for 30 seconds.
Vehicle Speed Messages
SPEED LIMITED TO XXX KM/
H (MPH)
This message shows that the
vehicle speed has been limited to
the speed displayed. The limited
speed is a protection for various
propulsion and vehicle systems,
such as lubrication, thermal, brakes,
suspension, Teen Driver if
equipped, or tires.
Vehicle
Personalization
Use the audio system controls to
access the personalization menus
for customizing vehicle features.
The following are all possible
personalization features. Depending
on the vehicle, some may not be
available.
Radio Audio System Controls1. Touch the desired feature to display a list of available
options.
2. Select the desired feature setting.
3. Press
oBACK on the center
stack or touch
Sto return to
the previous menu or exit.
Turn the vehicle on to access the
Settings menu, then select
SETTINGS from the Home Page on
the infotainment display. Personalization Menus
The following list of menu items may
be available:
.
Time and Date
. Rear Seat Reminder
. Language
. Video Voice-Over
. Valet Mode
. Teen Driver
. Radio
. Vehicle
. Bluetooth
. Apple CarPlay
. Android Auto
. Voice
. Display
. Rear Camera
. Return to Factory Settings
. Software Information
. Wi-Fi
Detailed information for each menu
follows.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-13566587) - 2020 - CRC - 4/15/19
Instruments and Controls 155
Forward Collision System
This setting controls the vehicle
response when detecting a vehicle
ahead of you. The Off setting
disables all FCA and AEB functions.
With the Alert and Brake setting,
both FCA and AEB are available.
The Alert setting disables AEB. See
Automatic Emergency Braking
(AEB)0248.
Select Off, Alert, or Alert and Brake.
Adaptive Cruise Go Notifier
This feature will give a reminder that
Adaptive Cruise Control provides
when it has brought the vehicle to a
complete stop behind another
stopping vehicle, and then that
vehicle drives on.
Select Off or On.
Park Assist
This allows the feature to be turned
on or off. See Assistance Systems
for Parking or Backing 0242.
Select Off, On, or On with Towbar
Attached. Rear Cross Traffic Alert
This allows the feature to be turned
on or off. See
Assistance Systems
for Parking or Backing 0242.
Select Off or On.
Lane Change Alert
This allows the feature to be turned
on or off. See Lane Change Alert
(LCA) 0250.
Select Off or On.
Comfort and Convenience
Select and the following may
display:
. Auto Power Assist Steps
. Auto Memory Recall
. Easy Exit Options
. Chime Volume
. Hands Free Liftgate Control
. Reverse Tilt Mirror
. Auto Mirror Folding
. Auto Wipe in Reverse Gear Auto Power Assist Steps
This allows the feature to be turned
on or off. See
Power Assist Steps
0 32.
Select Off, On, or Extended.
Auto Memory Recall
This feature automatically recalls
the current driver ’s previously stored
1 or 2 button positions when the
ignition is changed from off to on or
ACC/ACCESSORY. See Memory
Seats 051.
Select Off or On.
Easy Exit Options
This feature automatically recalls
the previously stored Exit button
position when exiting the vehicle.
See Memory Seats 051.
Select Off or On.
Chime Volume
This allows the selection of the
chime volume level.
Touch + or −to adjust the volume.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-13566587) - 2020 - CRC - 4/15/19
Driving and Operating 183
Driving and
Operating
Driving Information
Driving for Better FuelEconomy . . . . . . . . . . . . . . . . . . . . 184
Distracted Driving . . . . . . . . . . . . 184
Defensive Driving . . . . . . . . . . . . . 185
Drunk Driving . . . . . . . . . . . . . . . . . 185
Control of a Vehicle . . . . . . . . . . . 186
Braking . . . . . . . . . . . . . . . . . . . . . . . 186
Steering . . . . . . . . . . . . . . . . . . . . . . 186
Off-Road Recovery . . . . . . . . . . . 187
Loss of Control . . . . . . . . . . . . . . . 187
Off-Road Driving . . . . . . . . . . . . . 188
Driving on Wet Roads . . . . . . . . 193
Hill and Mountain Roads . . . . . 193
Winter Driving . . . . . . . . . . . . . . . . 194
If the Vehicle Is Stuck . . . . . . . . 195
Vehicle Load Limits . . . . . . . . . . . 196
Starting and Operating
New Vehicle Break-In . . . . . . . . . 201
Adjustable Throttle and Brake Pedal . . . . . . . . . . . . . . . . . . . . . . . 201
Ignition Positions (Keyless Access) . . . . . . . . . . . . . . . . . . . . . 202 Ignition Positions (Key
Access) . . . . . . . . . . . . . . . . . . . . . 204
Starting the Engine . . . . . . . . . . . 206
Engine Heater . . . . . . . . . . . . . . . . 207
Retained Accessory Power (RAP) . . . . . . . . . . . . . . . . 209
Shifting Into Park . . . . . . . . . . . . . 209
Shifting out of Park . . . . . . . . . . . 210
Parking over Things That Burn . . . . . . . . . . . . . . . . . . . 211
Active Fuel Management . . . . . 211
Extended Parking . . . . . . . . . . . . . 211
Engine Exhaust
Engine Exhaust . . . . . . . . . . . . . . 212
Running the Vehicle While Parked . . . . . . . . . . . . . . . . . . . . . . 212
Automatic Transmission
Automatic Transmission . . . . . . 213
Manual Mode . . . . . . . . . . . . . . . . . 216
Tow/Haul Mode . . . . . . . . . . . . . . . 218
Drive Systems
Four-Wheel Drive . . . . . . . . . . . . . 219
Brakes
Antilock Brake
System (ABS) . . . . . . . . . . . . . . . 224
Parking Brake . . . . . . . . . . . . . . . . 225
Brake Assist . . . . . . . . . . . . . . . . . . 225
Hill Start Assist (HSA) . . . . . . . . 225
Ride Control Systems
Traction Control/Electronic Stability Control . . . . . . . . . . . . . 226
Hill Descent Control (HDC) . . . 228
Magnetic Ride Control . . . . . . . . 229
Locking Rear Axle . . . . . . . . . . . . 229
Automatic Level Control . . . . . . 229
Cruise Control
Cruise Control . . . . . . . . . . . . . . . . 230
Adaptive Cruise Control . . . . . . 232
Driver Assistance Systems
Driver Assistance Systems . . . 240
Assistance Systems for Parking or Backing . . . . . . . . . . 242
Assistance Systems for Driving . . . . . . . . . . . . . . . . . . . . . . 245
Forward Collision Alert (FCA) System . . . . . . . . . . . . . . . . . . . . . . 245
Automatic Emergency Braking (AEB) . . . . . . . . . . . . . . . 248
Side Blind Zone Alert (SBZA) . . . . . . . . . . . . . . . . 249
Lane Change Alert (LCA) . . . . . 250
Lane Keep Assist (LKA) . . . . . . 251
Fuel
Top Tier Fuel . . . . . . . . . . . . . . . . . 254
Recommended Fuel (L83 5.3L V8 Engine) . . . . . . . . . . . . . . . . . . 254

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-13566587) - 2020 - CRC - 4/15/19
184 Driving and Operating
Recommended Fuel (L86 6.2LV8 Engine) . . . . . . . . . . . . . . . . . . 254
Prohibited Fuels . . . . . . . . . . . . . . 255
Fuels in Foreign Countries . . . 255
Fuel Additives . . . . . . . . . . . . . . . . 255
E85 or FlexFuel . . . . . . . . . . . . . . 255
Filling the Tank . . . . . . . . . . . . . . . 256
Filling a Portable Fuel Container . . . . . . . . . . . . . . . . . . . 258
Trailer Towing
General TowingInformation . . . . . . . . . . . . . . . . . . 259
Driving Characteristics and Towing Tips . . . . . . . . . . . . . . . . . 259
Trailer Towing . . . . . . . . . . . . . . . . 264
Towing Equipment . . . . . . . . . . . . 270
Trailer Sway Control (TSC) . . . 278
Conversions and Add-Ons
Add-On Electrical Equipment . . . . . . . . . . . . . . . . . . 280
Driving Information
Driving for Better Fuel
Economy
Driving habits can affect fuel
mileage. Here are some driving tips
to get the best fuel economy
possible:
. Set the climate controls to the
desired temperature after the
engine is started, or turn them
off when not required.
. Avoid fast starts and accelerate
smoothly.
. Brake gradually and avoid
abrupt stops.
. Avoid idling the engine for long
periods of time.
. When road and weather
conditions are appropriate, use
cruise control.
. Always follow posted speed
limits or drive more slowly when
conditions require.
. Keep vehicle tires properly
inflated. .
Combine several trips into a
single trip.
. Replace the vehicle's tires with
the same TPC Spec number
molded into the tire's sidewall
near the size.
. Follow recommended scheduled
maintenance.
Distracted Driving
Distraction comes in many forms
and can take your focus from the
task of driving. Exercise good
judgment and do not let other
activities divert your attention away
from the road. Many local
governments have enacted laws
regarding driver distraction. Become
familiar with the local laws in
your area.
To avoid distracted driving, keep
your eyes on the road, keep your
hands on the steering wheel, and
focus your attention on driving.