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Vehicle Care 357
2. Assemble the wheel blocksand jack together with the
wing nut.
3. Position the jack and wheel blocks in the driver side trim
panel over the wheelhouse.
4. Turn the jack knob clockwise until the jack is secured tight in
the mounting bracket. Be sure
to position the holes in the
base of the jack onto the pin in
the mounting bracket.
5. Use the retaining bracket to fasten the tool bag on the stud
and turn the wing nut clockwise
to secure.
6. Close the trim panel door.
Full-Size Spare Tire
If this vehicle came with a full-size
spare tire, it was fully inflated when
new, however, it can lose air over
time. Check the inflation pressure
regularly.
See Tire Pressure 0334 and
Vehicle Load Limits 0213. For instructions on how to remove,
install, or store a spare tire, see
Tire
Changing 0348.
If equipped with a temporary use
full-size spare tire, it is indicated on
the tire sidewall. See Tire Sidewall
Labeling 0329. This spare tire
should not be driven on over
112 km/h (70 mph), or 88 km/h
(55 mph) when pulling a trailer, at
the proper inflation pressure. Repair
and replace the road tire as soon as
it is convenient, and stow the spare
tire for future use.
Caution
If the vehicle has four-wheel drive
and a different size spare tire is
installed, do not drive in
four-wheel drive until the flat tire
is repaired and/or replaced. The
vehicle could be damaged and
the repairs would not be covered
by the warranty. Never use
four-wheel drive when a different
size spare tire is installed on the
vehicle. The vehicle may have a different
size spare tire than the road tires
originally installed on the vehicle.
This spare tire was developed for
use on this vehicle, so it is all right
to drive on it. If the vehicle has
four-wheel drive and a different size
spare tire is installed, drive only in
two-wheel drive.
After installing the spare tire on the
vehicle, stop as soon as possible
and check that the spare tire is
correctly inflated.
Have the damaged or flat road tire
repaired or replaced and installed
back onto the vehicle as soon as
possible so the spare tire will be
available in case it is needed again.
Do not mix tires and wheels of
different sizes, because they will not
fit. Keep your spare tire and its
wheel together. If the vehicle has a
spare tire that does not match the
original road tires and wheels in size
and type, do not include the spare in
the tire rotation.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
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Vehicle Care 363
{Warning
Shifting a four-wheel-drive
vehicle's transfer case into
N (Neutral) can cause the vehicle
to roll even if the transmission is
in P (Park). You or others could
be injured. Set the parking brake
before shifting the transfer case
to N (Neutral).
To dinghy tow: 1. Position the vehicle being towed behind the tow vehicle,
facing forward and on a level
surface.
2. Securely attach the vehicle being towed to the tow vehicle.
3. Apply the parking brake and start the engine.
4. Shift the transfer case to N (Neutral). See “Shifting into
N (Neutral)” underFour-Wheel
Drive 0235. Check that the
vehicle is in N (Neutral) by
starting the engine and shifting
the transmission to R (Reverse) and then to D
(Drive). There should be no
movement of the vehicle while
shifting.
5. Shift the transmission into D (Drive). Turn the engine off.
Caution
Failure to disconnect the negative
battery cable or to have it contact
the terminals can cause damage
to the vehicle.
6. Disconnect the negative battery cable at the battery and
secure the nut and bolt. Cover
the negative battery post with a
non-conductive material to
prevent any contact with the
negative battery terminal.
7. Shift the transmission to P (Park).
Caution
If the steering column is locked,
vehicle damage may occur. 8. Move the steering wheel to
make sure the steering column
is unlocked.
9. With a foot on the brake pedal, release the parking brake.
10. Keep the ignition key in the towed vehicle in ACC/
ACCESSORY to prevent the
steering column from locking.
If equipped with Keyless
Access, keep the RKE
transmitter outside of the
vehicle, and manually lock the
doors. Access the vehicle as if
it has a dead RKE transmitter
battery, by using the key in the
door lock.
Disconnecting the Towed Vehicle
Before disconnecting the towed
vehicle: 1. Park on a level surface.
2. Set the parking brake, then shift the transmission to
P (Park).
3. Connect the battery.
4. Apply the brake pedal.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
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370 Vehicle Care
For 1500 Series vehicles, at least
every other oil change lubricate the
outer tie rod ends.
Control arm ball joints on 1500
Series vehicles are
maintenance-free.
Caution
Lubrication of applicable steering/
suspension points should not be
done unless the temperature is
−12 °C (10 °F) or higher,
or damage could result.
Body Component Lubrication
Lubricate all key lock cylinders,
hood hinges, liftgate hinges, steel
fuel door hinge and power assist
step hinges, unless the components
are plastic. Applying silicone grease
on weatherstrips with a clean cloth
will make them last longer, seal
better, and not stick or squeak.
Underbody Maintenance
At least twice a year, spring and fall,
use plain water to flush any
corrosive materials from theunderbody. Take care to thoroughly
clean any areas where mud and
other debris can collect. If equipped
with power assist steps, extend
them and then use a high pressure
wash to clean all joints and gaps.
Do not directly power wash the
transfer case and/or front/rear axle
output seals. High pressure water
can overcome the seals and
contaminate the fluid. Contaminated
fluid will decrease the life of the
transfer case and/or axles and
should be replaced.
Sheet Metal Damage
If the vehicle is damaged and
requires sheet metal repair or
replacement, make sure the body
repair shop applies anti-corrosion
material to parts repaired or
replaced to restore corrosion
protection.
Original manufacturer replacement
parts will provide the corrosion
protection while maintaining the
vehicle warranty.
Finish Damage
Quickly repair minor chips and
scratches with touch-up materials
available from your dealer to avoid
corrosion. Larger areas of finish
damage can be corrected in your
dealer's body and paint shop.
Chemical Paint Spotting
Airborne pollutants can fall upon
and attack painted vehicle surfaces
causing blotchy, ring-shaped
discolorations, and small, irregular
dark spots etched into the paint
surface. See
“Finish Care”
previously in this section.
Interior Care
To prevent dirt particle abrasions,
regularly clean the vehicle's interior.
Immediately remove any soils.
Newspapers or dark garments can
transfer color to the vehicle’s
interior.
Use a soft bristle brush to remove
dust from knobs and crevices on the
instrument cluster. Using a mild
soap solution, immediately remove

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
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408 OnStar
.Obtain and customize the Wi-Fi®
hotspot name or SSID and
password, if equipped.
Press
Qto connect to an
Advisor to:
. Verify account information or
update contact information.
. Get driving directions.
. Receive a Diagnostic check of
the vehicle's key operating
systems.
. Receive Roadside Assistance.
. Manage Wi-Fi Settings,
if equipped.
Press
>to get a priority connection
to an OnStar Advisor available 24/
7 to:
. Get help for an emergency.
. Be a Good Samaritan or
respond to an AMBER Alert.
. Get assistance in severe
weather or other crisis situations
and find evacuation routes.
OnStar Services
Emergency
Emergency Services require an
active, OnStar service plan
(excludes Basic Plan). With
Automatic Crash Response, built-in
sensors can automatically alert a
specially trained OnStar Advisor
who is immediately connected in to
the vehicle to help.
Press
>for a priority connection to
an OnStar Advisor who can contact
emergency service providers, direct
them to your exact location, and
relay important information.
With OnStar Crisis Assist, specially
trained Advisors are available
24 hours a day, 7 days a week, to
provide a central point of contact,
assistance, and information during a
crisis.
With Roadside Assistance, Advisors
can locate a nearby service provider
to help with a flat tire, a battery
jump, or an empty gas tank.
Security
If equipped, OnStar provides these
services:
. With Stolen Vehicle Assistance,
OnStar Advisors can use GPS to
pinpoint the vehicle and help
authorities quickly recover it.
. With Remote Ignition Block™,
if equipped, OnStar can block
the engine from being restarted.
. With Stolen Vehicle Slowdown,
if equipped, OnStar can work
with law enforcement to
gradually slow the vehicle down.
Theft Alarm Notification
If equipped, if the doors are locked
and the vehicle alarm sounds, a
notification by text, e-mail, or phone
call will be sent. If the vehicle is
stolen, an OnStar Advisor can work
with authorities to recover the
vehicle.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
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410 OnStar
from each other and use a
combination of letters, numbers,
and symbols to increase the
security.
. Change the default name of the
SSID (Service Set Identifier).
This is your network’s name that
is visible to other wireless
devices. Choose a unique name
and avoid family names or
vehicle descriptions.
OnStar Wi-Fi
®Hotspot (If
Equipped)
The vehicle may have a built-in
Wi-Fi hotspot that provides access
to the Internet and web content at
4G LTE speed. Up to seven mobile
devices can be connected. A data
plan is required. Use the in-vehicle
controls only when it is safe to
do so.
1. To retrieve Wi-Fi hotspot information, press
=, wait for
the prompt, then say “Wi-Fi
settings.” On some vehicles,
touch Wi-Fi Settings on the
screen. 2. The Wi-Fi settings will display
the Wi-Fi hotspot name (SSID),
password, and on some
vehicles, the connection type
(no Internet connection, 3G,
4G, 4G LTE), and signal quality
(poor, good, excellent).
3. To change the SSID or password, press
Qor call
1-888-4ONSTAR to connect
with an Advisor.
After initial set-up, your vehicle’s
Wi-Fi hotspot will connect
automatically to your mobile
devices. Manage data usage by
turning Wi-Fi on or off on your
mobile device, using the
RemoteLink mobile app, or by
contacting an OnStar Advisor.
OnStar RemoteLink
®Mobile App
(If Equipped)
Download the OnStar RemoteLink
mobile app to select Apple
®iOS,
Android™, BlackBerry®,
or Windows®mobile devices.
OnStar Subscribers can access the
following services from a mobile
device: .
Remotely start/stop the vehicle,
if factory-equipped.
. Lock/unlock doors, if equipped
with automatic locks.
. Activate the horn and lamps.
. Check the vehicle’s fuel level, oil
life, or tire pressure,
if factory-equipped with the Tire
Pressure Monitor System.
. Send directions to the vehicle.
. Locate the vehicle on a map
(U.S. market only).
. Turn the vehicle's Wi-Fi hotspot
on/off, manage settings, and
monitor data consumption,
if equipped.
For OnStar RemoteLink information
and compatibility, see
www.onstar.com (U.S.) or
www.onstar.ca (Canada).
Remote Services
Contact an OnStar Advisor to
unlock the doors or sound the horn
and flash the lamps.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
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OnStar 413
to the vehicle in a crash, or wireless
phone network congestion or
jamming—may prevent service.
See Radio Frequency Statement
0 403.
Services for People with
Disabilities
Advisors provide services to help
Subscribers with physical disabilities
and medical conditions.
Press
Qto help:
. Locate a gas station with an
attendant to pump gas.
. Find a hotel, restaurant, etc.,
that meets accessibility needs.
. Provide directions to the closest
hospital or pharmacy in urgent
situations.
TTY Users
OnStar has the ability to
communicate to deaf,
hard-of-hearing, or speech-impaired
customers while in the vehicle. The
available dealer-installed TTY
system can provide in-vehicle access to all OnStar services,
except Virtual Advisor and OnStar
Turn-by-Turn Navigation.
OnStar Personal Identification
Number (PIN)
A PIN is needed to access some
OnStar services. The PIN will need
to be changed the first time when
speaking with an Advisor. To
change the OnStar PIN, contact an
OnStar Advisor by pressing
Qor
calling 1-888-4ONSTAR.
Warranty
OnStar equipment may be
warranted as part of the vehicle
warranty.
Languages
The vehicle can be programmed to
respond in multiple languages.
Press
Qand ask for an Advisor.
Advisors are available in English,
Spanish, and French. Available
languages may vary by country.
Potential Issues
OnStar cannot perform Remote
Door Unlock or Stolen Vehicle
Assistance after the vehicle has
been off continuously for 10 days
without an ignition cycle. If the
vehicle has not been started for
five days, OnStar can contact
Roadside Assistance or a locksmith
to help gain access to the vehicle.
Global Positioning
System (GPS)
. Obstruction of the GPS can
occur in a large city with tall
buildings; in parking garages;
around airports; in tunnels and
underpasses; or in an area with
very dense trees. If GPS signals
are not available, the OnStar
system should still operate to
call OnStar. However, OnStar
could have difficulty identifying
the exact location.
. In emergency situations, OnStar
can use the last stored GPS
location to send to emergency
responders.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
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418 Index
Assistance Program,Roadside . . . . . . . . . . . . . . . . . . . . . . 397
Assistance Systems for Driving . . . . . . . . . . . . . . . . . . . . . . . . 256
Assistance Systems for Parking and Backing . . . . . . . . . . 254
Automatic
Dimming Mirrors . . . . . . . . . . . . . . . . 55
Door Locks . . . . . . . . . . . . . . . . . . . . . 43
Forward Braking . . . . . . . . . . . . . . 259
Headlamp System . . . . . . . . . . . . 185
Level Control . . . . . . . . . . . . . . . . . 243
Transmission . . . . . . . . . . . . . . . . . 229
Transmission Fluid . . . . . . 294, 297
Automatic Transmission Manual Mode . . . . . . . . . . . . . . . . . 231
Shift Lock Control Function
Check . . . . . . . . . . . . . . . . . . . . . . . .311
Axle, Front . . . . . . . . . . . . . . . . . . . . . . 308
Axle, Rear . . . . . . . . . . . . . . . . . . . . . . 309
B
Battery Load Management . . . . . . . . . . . . 189
Power Protection . . . . . . . . . . . . . 190
Voltage and ChargingMessages . . . . . . . . . . . . . . . . . . . 160 Battery - North America . . . . 307, 358
Blade Replacement, Wiper . . . . . 312
Blind Spot Mirrors . . . . . . . . . . . . . . . 55
Brake
Pedal and AdjustableThrottle . . . . . . . . . . . . . . . . . . . . . . 218
System Warning Light . . . . . . . . 147
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . 305 Antilock . . . . . . . . . . . . . . . . . . . . . . . 238
Assist . . . . . . . . . . . . . . . . . . . . . . . . . 240
Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . 306
Parking . . . . . . . . . . . . . . . . . . . . . . . 239
System Messages . . . . . . . . . . . . 160
Braking . . . . . . . . . . . . . . . . . . . . . . . . . 202 Automatic Forward . . . . . . . . . . . 259
Break-In, New Vehicle . . . . . . . . . . 217
Bulb Replacement . . . . . . . . . . . . . . 316
Back-up Lamps . . . . . . . . . . . . . . . 314
Fog Lamps . . . . . . . . . . . . . . . . . . . 314
Headlamp Aiming . . . . . . . . . . . . . 313
Headlamps . . . . . . . . . . . . . . . . . . . 314
High Intensity Discharge(HID) Lighting . . . . . . . . . . . . . . . 314
License Plate Lamps . . . . . . . . . 315
Buying New Tires . . . . . . . . . . . . . . . 342
C
Calibration . . . . . . . . . . . . . . . . . . . . . . 129
California
Fuel Requirements . . . . . . . . . . . 266
Perchlorate MaterialsRequirements . . . . . . . . . . . . . . . 285
California Proposition
65 Warning . . . . . . . . . .285, 307, 358
Canadian Vehicle Owners . . . . . . . . 2
Capacities and
Specifications . . . . . . . . . . . . . . . . . 391
Carbon Monoxide Engine Exhaust . . . . . . . . . . . . . . . 228
Liftgate . . . . . . . . . . . . . . . . . . . . . . . . . 44
Winter Driving . . . . . . . . . . . . . . . . 210
Cargo Tie-Downs . . . . . . . . . . . . . . . . . . . . 123
Caution, Danger, and Warning . . . . 2
Center Console Storage . . . . . . . . 122
Chains, Tire . . . . . . . . . . . . . . . . . . . . 346
Charging
Wireless . . . . . . . . . . . . . . . . . . . . . . 133
Charging System Light . . . . . . . . . 144
Check
Ignition Transmission Lock . . . .311

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
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Index 419
Check (cont'd)Malfunction Indicator
Engine Light . . . . . . . . . . . . . . . . 145
Child Restraints
Infants and Young Children . . . 101
Lower Anchors and Tethersfor Children . . . . . . . . . . . . . . . . . 106
Older Children . . . . . . . . . . . . . . . . . . 99
Securing . . . . . . . . . . . . . . . . . .114, 117
Systems . . . . . . . . . . . . . . . . . . . . . . 103
Child-View Mirror . . . . . . . . . . . . . . . . 57
Cleaning Exterior Care . . . . . . . . . . . . . . . . . 366
Interior Care . . . . . . . . . . . . . . . . . . 370
Climate Control Systems Dual Automatic . . . . . . . . . . . . . . . 192
Rear . . . . . . . . . . . . . . . . . . . . . . . . . . 196
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
Cluster, Instrument . . . . . . . . . . . . . 135
Collision Damage Repair . . . . . . . 400
Compartments
Storage . . . . . . . . . . . . . . . . . . . . . . . 121
Compass . . . . . . . . . . . . . . . . . . . . . . . 129
Messages . . . . . . . . . . . . . . . . . . . . 161
Connections OnStar
®. . . . . . . . . . . . . . . . . . . . . . 409 Control
Traction and Electronic
Stability . . . . . . . . . . . . . . . . . . . . . 241
Control of a Vehicle . . . . . . . . . . . . . 202
Convenience Net . . . . . . . . . . . . . . . 123
Convex Mirrors . . . . . . . . . . . . . . . . . . 54
Coolant Engine . . . . . . . . . . . . . . . . . . . . . . . . 300
Engine Temperature Gauge . . 140
Engine TemperatureWarning Light . . . . . . . . . . . . . . . 150
Cooling . . . . . . . . . . . . . . . . . . . . 192, 196
Cooling System . . . . . . . . . . . . . . . . . 299 Engine Messages . . . . . . . . . . . . 162
Courtesy Transportation Program . . . . . . . . . . . . . . . . . . . . . . . 399
Cruise Control . . . . . . . . . . . . . . . . . . 244 Light . . . . . . . . . . . . . . . . . . . . . . . . . . 152
Messages . . . . . . . . . . . . . . . . . . . . 161
Cruise Control, Adaptive . . . . . . . . 246
Cupholders . . . . . . . . . . . . . . . . . . . . . 121
Customer Assistance . . . . . . . . . . . 396 Offices . . . . . . . . . . . . . . . . . . . . . . . . 395
Text Telephone (TTY)Users . . . . . . . . . . . . . . . . . . . . . . . 396 Customer Information
Service Publications
Ordering Information . . . . . . . . 402
Customer Satisfaction Procedure . . . . . . . . . . . . . . . . . . . . . 393
D
Damage Repair, Collision . . . . . . . 400
Danger, Warning, and Caution . . . . 2
Data CollectionInfotainment System . . . . . . . . . . 406
OnStar . . . . . . . . . . . . . . . . . . . . . . . 405
Data Recorders, Event . . . . . . . . . 405
Daytime Running Lamps (DRL) . . . . . . . . . . . . . . . . . . 185
Defensive Driving . . . . . . . . . . . . . . . 202
Delayed Locking . . . . . . . . . . . . . . . . . 43
Diagnostics OnStar
®. . . . . . . . . . . . . . . . . . . . . . .411
Distracted Driving . . . . . . . . . . . . . . . 201
Dome Lamps . . . . . . . . . . . . . . . . . . . 188
Door Ajar Light . . . . . . . . . . . . . . . . . . . . . 153
Ajar Messages . . . . . . . . . . . . . . . 162
Delayed Locking . . . . . . . . . . . . . . . . 43
Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Power Locks . . . . . . . . . . . . . . . . . . . . 43