393 GMC YUKON 2020 Owner's Manual

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-13566587) - 2020 - CRC - 4/15/19
290 Vehicle Care
engine oil level on steep grades
or too soon after engine shutoff
can result in incorrect readings.
Accuracy improves when
checking a cold engine prior to
starting. Remove the dipstick
and check the level.
. If unable to wait two hours, the
engine must be off for at least
15 minutes if the engine is
warm, or at least 30 minutes if
the engine is not warm. Pull out
the dipstick, wipe it with a clean
paper towel or cloth, then push it
back in all the way. Remove it
again, keeping the tip down, and
check the level.
When to Add Engine Oil
If the oil is below the cross-hatched
area at the tip of the dipstick and
the engine has been off for at least
15 minutes, add 1 L (1 qt) of the
recommended oil and then recheck
the level. See “Selecting the Right
Engine Oil” later in this section for
an explanation of what kind of oil to
use. For engine oil crankcase
capacity, see Capacities and
Specifications 0393.
Caution
Do not add too much oil. Oil
levels above or below the
acceptable operating range
shown on the dipstick are harmful
to the engine. If the oil level is
above the operating range (i.e.,
the engine has so much oil that
the oil level gets above the
cross-hatched area that shows
the proper operating range), the
engine could be damaged. Drain
the excess oil or limit driving of
the vehicle, and seek a service
professional to remove the
excess oil. See
Engine Compartment Overview
0 286 for the location of the engine
oil fill cap.
Add enough oil to put the level
somewhere in the proper operating
range. Push the dipstick all the way
back in when through.
Selecting the Right Engine Oil
Selecting the right engine oil
depends on both the proper oil
specification and viscosity grade.
See Recommended Fluids and
Lubricants 0388.
Specification
Use full synthetic engine oils that
meet the dexos1 specification.
Engine oils that have been
approved by GM as meeting the
dexos1 specification are marked
with the dexos1 approved logo. See
www.gmdexos.com.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-13566587) - 2020 - CRC - 4/15/19
Vehicle Care 303
Caution (Continued)
.When using concentrated
washer fluid, follow the
manufacturer instructions for
adding water.
. Fill the washer fluid tank
only three-quarters full when
it is very cold. This allows
for fluid expansion if
freezing occurs, which could
damage the tank if it is
completely full.
Brakes
Disc brake pads have built-in wear
indicators that make a high-pitched
warning sound when the brake pads
are worn and new pads are needed.
The sound can come and go or can
be heard all the time when the
vehicle is moving, except when
applying the brake pedal firmly.
{Warning
The brake wear warning sound
means that soon the brakes will
not work well. That could lead to
a crash. When the brake wear
warning sound is heard, have the
vehicle serviced.
Caution
Continuing to drive with worn-out
brake pads could result in costly
brake repair.
Some driving conditions or climates
can cause a brake squeal when the
brakes are first applied or lightly
applied. This does not mean
something is wrong with the brakes.
Properly torqued wheel nuts are
necessary to help prevent brake
pulsation. When tires are rotated,
inspect brake pads for wear and
evenly tighten wheel nuts in the proper sequence to torque
specifications. See
Capacities and
Specifications 0393.
Brake pads should be replaced as
complete sets.
Brake Pedal Travel
See your dealer if the brake pedal
does not return to normal height,
or if there is a rapid increase in
pedal travel. This could be a sign
that brake service may be required.
Replacing Brake System Parts
Always replace brake system parts
with new, approved replacement
parts. If this is not done, the brakes
may not work properly. The braking
performance expected can change
in many other ways if the wrong
replacement brake parts are
installed or if parts are improperly
installed.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-13566587) - 2020 - CRC - 4/15/19
Vehicle Care 341
Use this rotation pattern when
rotating the tires.
Do not include the spare tire in
the tire rotation.
Adjust the front and rear tires to
the recommended inflation
pressure on the Tire and
Loading Information label after
the tires have been rotated. See
Tire Pressure0333 and
Vehicle Load Limits 0196.
Reset the Tire Pressure Monitor
System. See Tire Pressure
Monitor Operation 0336. Check that all wheel nuts are
properly tightened. See
“Wheel
Nut Torque” underCapacities
and Specifications 0393, and
“Removing the Flat Tire and
Installing the Spare Tire” under
Tire Changing 0349.
{Warning
Rust or dirt on a wheel, or on the
parts to which it is fastened, can
make wheel nuts become loose
after time. The wheel could come
off and cause a crash. When
changing a wheel, remove any
rust or dirt from places where the
wheel attaches to the vehicle. In
an emergency, a cloth or a paper
towel can be used; however, use
a scraper or wire brush later to
remove all rust or dirt.
Lightly coat the inner diameter of
the wheel hub opening with
wheel bearing grease after a
wheel change or tire rotation to
prevent corrosion or rust buildup. Do not get grease on
the wheel mounting surface or
on the wheel nuts or bolts.
When It Is Time for New
Tires
Factors, such as maintenance,
temperatures, driving speeds,
vehicle loading, and road conditions
affect the wear rate of the tires.
Treadwear indicators are one way to
tell when it is time for new tires.
Treadwear indicators appear when
the tires have only 1.6 mm (1/16 in)
or less of tread remaining. Some

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-13566587) - 2020 - CRC - 4/15/19
Vehicle Care 355
{Warning
Never use oil or grease on bolts
or nuts because the nuts might
come loose. The vehicle's wheel
could fall off, causing a crash.
9. Tighten each wheel nut by hand. Then use the wheel
wrench to tighten the nuts until
the wheel is held against
the hub.
10. Turn the wheel wrench counterclockwise to lower the
vehicle. Lower the jack
completely.
11. Tighten the nuts firmly in acrisscross sequence as shown
by turning the wheel wrench
clockwise.
{Warning
Wheel nuts that are improperly or
incorrectly tightened can cause
the wheels to become loose or
come off. The wheel nuts should
be tightened with a torque wrench
to the proper torque specification
after replacing. Follow the torque
specification supplied by the
(Continued)
Warning (Continued)
aftermarket manufacturer when
using accessory locking wheel
nuts. SeeCapacities and
Specifications 0393 for original
equipment wheel nut torque
specifications.
Caution
Improperly tightened wheel nuts
can lead to brake pulsation and
rotor damage. To avoid expensive
brake repairs, evenly tighten the
wheel nuts in the proper
sequence and to the proper
torque specification. See
Capacities and Specifications
0 393 for the wheel nut torque
specification.
When reinstalling the regular wheel
and tire, also reinstall either the
center cap or the bolt-on hub cap,
depending on which one the
vehicle has.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-13566587) - 2020 - CRC - 4/15/19
392 Technical Data
Technical Data
Vehicle Identification
Vehicle IdentificationNumber (VIN) . . . . . . . . . . . . . . . 392
Service Parts Identification . . . 392
Vehicle Data
Capacities and Specifications . . . . . . . . . . . . . . . 393
Engine Drive Belt Routing . . . . 395
Vehicle Identification
Vehicle Identification
Number (VIN)
This legal identifier is in the front
corner of the instrument panel, on
the driver side of the vehicle. It can
be seen through the windshield from
outside. The Vehicle Identification
Number (VIN) also appears on the
Vehicle Certification and Service
Parts labels and certificates of title
and registration.
Engine Identification
The eighth character in the VIN is
the engine code. This code
identifies the vehicle's engine,
specifications, and replacement parts. See
“Engine Specifications”
under Capacities and Specifications
0 393 for the vehicle's engine code.
Service Parts
Identification
There may be a large barcode on
the certification label on the center
pillar that you can scan for the
following information:
.
Vehicle Identification
Number (VIN)
. Model designation
. Paint information
. Production options
If there is not a large barcode on
this label, then you will find this
same information on a label inside
of the glove box.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-13566587) - 2020 - CRC - 4/15/19
Technical Data 393
Vehicle Data
Capacities and Specifications
The following approximate capacities are given in metric and English conversions. SeeRecommended Fluids and
Lubricants 0388 for more information.
Application Capacities
Metric English
Air Conditioning Refrigerant For the air conditioning system refrigerant type and charge amount, see the refrigerant label under thehood. See your dealer for more information.
Engine Cooling System* 5.3L V8 16.8 L 17.8 qt
6.2L V8 16.8 L 17.8 qt
Engine Oil with Filter 5.3L V8 7.6 L 8.0 qt
6.2L V8 7.6 L 8.0 qt
Fuel Tank Short Wheelbase 98.4 L 26.0 gal
Long Wheelbase 119.2 L 31.5 gal
Transfer Case Fluid 1.5 L 1.6 qt

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./Cana-
da/Mexico-13566587) - 2020 - CRC - 4/15/19
422 Index
Assistance Program,Roadside . . . . . . . . . . . . . . . . . . . . . . 400
Assistance Systems for Driving . . . . . . . . . . . . . . . . . . . . . . . . 245
Assistance Systems for Parking and Backing . . . . . . . . . . 242
Automatic
Dimming Mirrors . . . . . . . . . . . . . . . . 39
Door Locks . . . . . . . . . . . . . . . . . . . . . 25
Emergency Braking (AEB) . . . . 248
Headlamp System . . . . . . . . . . . . 167
Level Control . . . . . . . . . . . . . . . . . 229
Transmission . . . . . . . . . . . . . . . . . 213
Transmission Fluid . . . . . . 292, 295
Automatic Transmission Manual Mode . . . . . . . . . . . . . . . . . 216
Shift Lock Control Function
Check . . . . . . . . . . . . . . . . . . . . . . . 308
Axle, Front . . . . . . . . . . . . . . . . . . . . . . 306
Axle, Rear . . . . . . . . . . . . . . . . . . . . . . 306
B
Battery Exterior Lighting BatterySaver . . . . . . . . . . . . . . . . . . . . . . . 173
Load Management . . . . . . . . . . . . 172 Battery (cont'd)
Power Protection . . . . . . . . . . . . . 172
Battery - North America . . . . 305, 360
Blade Replacement, Wiper . . . . . 309
Blind Spot Mirrors . . . . . . . . . . . . . . . 39
Brake Pedal and AdjustableThrottle . . . . . . . . . . . . . . . . . . . . . . 201
System Warning Light . . . . . . . . 138
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . 303 Antilock . . . . . . . . . . . . . . . . . . . . . . . 224
Assist . . . . . . . . . . . . . . . . . . . . . . . . . 225
Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . 304
Parking . . . . . . . . . . . . . . . . . . . . . . . 225
Braking . . . . . . . . . . . . . . . . . . . . . . . . . 186 AutomaticEmergency (AEB) . . . . . . . . . . . 248
Break-In, New Vehicle . . . . . . . . . . 201
Bulb Replacement
Back-up Lamps . . . . . . . . . . . . . . . 313
Fog Lamps . . . . . . . . . . . . . . . . . . . 312
Headlamp Aiming . . . . . . . . . . . . . 312
Headlamps . . . . . . . . . . . . . . . . . . . 312
High Intensity Discharge(HID) Lighting . . . . . . . . . . . . . . . 312
License Plate Lamps . . . . . . . . . 314
Buying New Tires . . . . . . . . . . . . . . . 342
C
Calibration . . . . . . . . . . . . . . . . . . . . . . 119
California Perchlorate MaterialsRequirements . . . . . . . . . . . . . . . 283
California Proposition
65 Warning . . . . . . . . . .282, 305, 360, Back Cover
Canadian Vehicle Owners . . . . . . . . 2
Capacities and
Specifications . . . . . . . . . . . . . . . . . 393
Carbon Monoxide Engine Exhaust . . . . . . . . . . . . . . . 212
Liftgate . . . . . . . . . . . . . . . . . . . . . . . . . 27
Winter Driving . . . . . . . . . . . . . . . . 194
Cargo Tie-Downs . . . . . . . . . . . . . . . . . . . . .112
Caution, Danger, and Warning . . . . 3
Center Console Storage . . . . . . . . 110
Center Seat . . . . . . . . . . . . . . . . . . . . . 48
Chains, Tire . . . . . . . . . . . . . . . . . . . . 347
Charging Wireless . . . . . . . . . . . . . . . . . . . . . . 122
Charging System Light . . . . . . . . . 135
Check Engine Light (MalfunctionIndicator) . . . . . . . . . . . . . . . . . . . . 136

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./Cana-
da/Mexico-13566587) - 2020 - CRC - 4/15/19
430 Index
Seats (cont'd)Second Row . . . . . . . . . . . . . . . . . . . . 56
Third Row Seat . . . . . . . . . . . . . . . . . 60
Second Row Seats . . . . . . . . . . . . . . 56
Securing Child
Restraints . . . . . . . . . . .103, 105, 106
Security Light . . . . . . . . . . . . . . . . . . . . . . . . . . 143
OnStar . . . . . . . . . . . . . . . . . . . . . . . 412
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . 33
Vehicle Alarm . . . . . . . . . . . . . . . . . . . 33
Service . . . . . . . . . . . . . . . . . . . . . . . . . 182 Accessories andModifications . . . . . . . . . . . . . . . . 283
Doing Your Own Work . . . . . . . . 283
Maintenance Records . . . . . . . . 391
Maintenance, General Information . . . . . . . . . . . . . . . . . . 377
Parts Identification . . . . . . . . . . . . 392
Scheduling Appointments . . . . . 401
Services Special Application . . . . . . . . . . . 384
Servicing the Airbag . . . . . . . . . . . . . 84
Shift Lock Control Function
Check, Automatic
Transmission . . . . . . . . . . . . . . . . . . 308
Shifting Into Park . . . . . . . . . . . . . . . . . . . . . . 209 Shifting (cont'd)
Out of Park . . . . . . . . . . . . . . . . . . . 210
Side Blind Zone Alert (SBZA) . . . 249
Signals, Turn and Lane-Change . . . . . . . . . . . . . . . . . 169
Special Application Services . . . . 384
Specifications and Capacities . . . . . . . . . . . . . . . . . . . . . 393
Speedometer . . . . . . . . . . . . . . . . . . . 129
StabiliTrak
OFF Light . . . . . . . . . . . . . . . . . . . . . 140
Start Assist, Hill . . . . . . . . . . . . . . . . . 225
Start Vehicle, Remote . . . . . . . . . . . 23
Starter Switch Check . . . . . . . . . . . 308
Starting the Engine . . . . . . . . . . . . . 206
Steering . . . . . . . . . . . . . . . . . . . . . . . . 186 Heated Wheel . . . . . . . . . . . . . . . . .116
Wheel Adjustment . . . . . . . . . . . . .115
Wheel Controls . . . . . . . . . . . . . . . .116
Steering Column Lock . . . . . . . . . . . 35
Steps Power Assist . . . . . . . . . . . . . . . . . . . 32
Storage
Rear . . . . . . . . . . . . . . . . . . . . . . . . . . .110
Storage Areas Armrest . . . . . . . . . . . . . . . . . . . . . . . .110
Center Console . . . . . . . . . . . . . . . .110
Convenience Net . . . . . . . . . . . . . .112 Storage Areas (cont'd)
Floor Console . . . . . . . . . . . . . . . . . 111
Glove Box . . . . . . . . . . . . . . . . . . . . 109
Roof Rack System . . . . . . . . . . . . .112
Sunglasses . . . . . . . . . . . . . . . . . . . .110
Storage Compartments . . . . . . . . . 109
Struts Gas . . . . . . . . . . . . . . . . . . . . . . . . . . . 310
Stuck Vehicle . . . . . . . . . . . . . . . . . . . 195
Sun Visors . . . . . . . . . . . . . . . . . . . . . . . 43
Sunglass Storage . . . . . . . . . . . . . . . 110
Sunroof . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . 3
System
Forward CollisionAlert (FCA) . . . . . . . . . . . . . . . . . . 245
Infotainment . . . . . . . . . . . . . 174, 409
Noise Control . . . . . . . . . . . . . . . . . 306
Roof Rack . . . . . . . . . . . . . . . . . . . . .112
Systems Driver Assistance . . . . . . . . . . . . . 240
T
Tachometer . . . . . . . . . . . . . . . . . . . . . 129
Text Telephone (TTY) Users . . . . 399
Theft-Deterrent Systems . . . . . . . . . 36Immobilizer . . . . . . . . . . . . . . . . . . . . . 36
Third-Row Seats . . . . . . . . . . . . . . . . . 60