Page 353 of 439

Black plate (62,1)GMC 2015i Yukon Denali/Yukon XL Denali Owner Manual (GMNA-
Localizing-U.S./Canada/Mexico-8431504) - 2015 - CRC - 7/30/14
10-62 Vehicle Care
Used Replacement Wheels
{Warning
Replacing a wheel with a used
one is dangerous. How it has
been used or how far it has been
driven may be unknown. It could
fail suddenly and cause a crash.
When replacing wheels, use a
new GM original equipment
wheel.
Tire Chains
{Warning
Do not use tire chains. There is
not enough clearance. Tire chains
used on a vehicle without the
proper amount of clearance can
cause damage to the brakes,
suspension, or other vehicle
parts. The area damaged by the
tire chains could cause loss of(Continued)
Warning (Continued)
control and a crash. Use another
type of traction device only if its
manufacturer recommends it for
the vehicle's tire size combination
and road conditions. Follow that
manufacturer's instructions. To
avoid vehicle damage, drive
slowly and readjust or remove the
traction device if it contacts the
vehicle. Do not spin the wheels.
If traction devices are used, install
them on the rear tires.
If a Tire Goes Flat
It is unusual for a tire to blowout
while driving, especially if the tires
are maintained properly. If air goes
out of a tire, it is much more likely to
leak out slowly. But if there ever is a
blowout, here are a few tips about
what to expect and what to do:
If a front tire fails, the flat tire
creates a drag that pulls the vehicle
toward that side. Take your foot off the accelerator pedal and grip the
steering wheel firmly. Steer to
maintain lane position, and then
gently brake to a stop, well off the
road, if possible.
A rear blowout, particularly on a
curve, acts much like a skid and
may require the same correction as
used in a skid. Stop pressing the
accelerator pedal and steer to
straighten the vehicle. It may be
very bumpy and noisy. Gently brake
to a stop, well off the road,
if possible.
{Warning
Driving on a flat tire will cause
permanent damage to the tire.
Re-inflating a tire after it has been
driven on while severely
underinflated or flat may cause a
blowout and a serious crash.
Never attempt to re-inflate a tire
that has been driven on while
severely underinflated or flat.
(Continued)
Page 354 of 439

Black plate (63,1)GMC 2015i Yukon Denali/Yukon XL Denali Owner Manual (GMNA-
Localizing-U.S./Canada/Mexico-8431504) - 2015 - CRC - 7/30/14
Vehicle Care 10-63
Warning (Continued)
Have your dealer or an authorized
tire service center repair or
replace the flat tire as soon as
possible.
{Warning
Lifting a vehicle and getting under
it to do maintenance or repairs is
dangerous without the
appropriate safety equipment and
training. If a jack is provided with
the vehicle, it is designed only for
changing a flat tire. If it is used for
anything else, you or others could
be badly injured or killed if the
vehicle slips off the jack. If a jack
is provided with the vehicle, only
use it for changing a flat tire.
If a tire goes flat, avoid further tire
and wheel damage by driving slowly
to a level place, well off the road, if possible. Turn on the hazard
warning flashers. See
Hazard
Warning Flashers on page 6-4.
{Warning
Changing a tire can be
dangerous. The vehicle can slip
off the jack and roll over or fall
causing injury or death. Find a
level place to change the tire. To
help prevent the vehicle from
moving:
1. Set the parking brake firmly.
2. Put the shift lever in P (Park).
3. For vehicles with four-wheel-drive with a
N (Neutral) transfer case
position, be sure the
transfer case is in a drive
gear —not in N (Neutral).
4. Turn off the engine and do not restart while the vehicle
is raised.
(Continued)
Warning (Continued)
5. Do not allow passengers toremain in the vehicle.
6. Place wheel blocks, if equipped, on both sides of
the tire at the opposite
corner of the tire being
changed.
When the vehicle has a flat tire (2),
use the following example as a
guide to assist in the placement of
the wheel blocks (1), if equipped.
1. Wheel Block (If Equipped)
2. Flat Tire
Page 355 of 439

Black plate (64,1)GMC 2015i Yukon Denali/Yukon XL Denali Owner Manual (GMNA-
Localizing-U.S./Canada/Mexico-8431504) - 2015 - CRC - 7/30/14
10-64 Vehicle Care
The following information explains
how to use the jack and change
a tire.
Tire Changing
Removing the Spare Tire and
Tools
The equipment needed to change a
flat tire is stored in the rear of the
vehicle, on the driver side, behind a
door in the trim panel.
1. Jack Knob2. Wing Nut Retaining the
Wheel Blocks
3. Wing Nut Retaining the Tool Bag
1. Pull to open the trim panel door.
The third row driver side seat
may need to be folded to access
the trim panel door.
2. Lift the acoustic pad to access the jack and tools. 3. Turn the wing nut retaining the
tool bag (3) counterclockwise to
remove it.
Pull the tool bag toward the front
of the vehicle and lift the rear
portion of the bag upward to
remove it.
4. Turn the jack knob (1) counterclockwise to release the
jack and wheel blocks from the
bracket.
5. Turn the wing nut retaining the wheel blocks (2)
counterclockwise to remove the
wheel blocks and the wheel
block retainer.
Page 356 of 439
Black plate (65,1)GMC 2015i Yukon Denali/Yukon XL Denali Owner Manual (GMNA-
Localizing-U.S./Canada/Mexico-8431504) - 2015 - CRC - 7/30/14
Vehicle Care 10-65
Use the following tools:
1. Jack
2. Wheel Blocks
3. Jack Handle
4. Jack Handle Extensions
5. Wheel Wrench
To access the spare tire, refer to the
following graphics and instructions:
1. Hoist Assembly
2. Hoist Shaft
3. Hoist Shaft AccessCover/Hole
4. Jack Handle Extensions
5. Wheel Wrench
6. Spare Tire Lock
7. Hoist End of Extension Tool
8. Hoist Shaft Access Hole
9. Spare Tire (Valve Stem Pointed Down) 10. Tire/Wheel Retainer
11. Hoist Cable
1. Open the hoist shaft access
door (3) on the bumper to
access the spare tire lock (6).
If equipped with a hitch cover,
turn the hitch cover retainers
counterclockwise and pull the
cover downward to remove it
before removing the hoist shaft
access door.
2. To remove the spare tire lock (6), insert the ignition key, turn it
clockwise and then pull it
straight out.
Page 357 of 439
Black plate (66,1)GMC 2015i Yukon Denali/Yukon XL Denali Owner Manual (GMNA-
Localizing-U.S./Canada/Mexico-8431504) - 2015 - CRC - 7/30/14
10-66 Vehicle Care
3. Assemble the two jack handleextensions (4) and wheel
wrench (5), as shown.4. Insert the open end of theextension (7) through the hole in
the rear bumper (8) (hoist shaft
access hole).
Be sure the hoist end of the
extension (7) connects to the
hoist shaft. The ribbed square
end of the extension is used to
lower the spare tire.
5. Turn the wheel wrench counterclockwise to lower the
spare tire to the ground.
Continue to turn the wheel wrench until the spare tire can
be pulled out from under the
vehicle.
6. Use the wheel wrench hook to
pull the hoist cable closer to
assist in reaching the spare tire.
Page 358 of 439
Black plate (67,1)GMC 2015i Yukon Denali/Yukon XL Denali Owner Manual (GMNA-
Localizing-U.S./Canada/Mexico-8431504) - 2015 - CRC - 7/30/14
Vehicle Care 10-67
7. Tilt the tire toward the vehiclewith some slack in the cable to
access the tire/wheel retainer.
Tilt the retainer and pull it and
the cable and spring through the
center of the wheel.
Once the retainer is separated
from the guide pin, tilt the
retainer and pull it through the
center of the wheel along with
the cable and latch.
8. Put the spare tire near the flat tire.
Removing the Flat Tire and
Installing the Spare Tire
1. Do a safety check beforeproceeding. See If a Tire Goes
Flat on page 10-62 for more
information.
2. Use the wheel wrench to loosen all the wheel nuts. Turn the
wheel wrench counterclockwise
to loosen the wheel nuts. Do not
remove the wheel nuts yet.
Jacking Locations (Overall View)
3. Position the jack under the vehicle, as shown.
Left Front Shown, Right Front
Similar
Page 359 of 439

Black plate (68,1)GMC 2015i Yukon Denali/Yukon XL Denali Owner Manual (GMNA-
Localizing-U.S./Canada/Mexico-8431504) - 2015 - CRC - 7/30/14
10-68 Vehicle Care
Front Tire Flat:If the flat tire is
on a front tire of the vehicle, use
the jack handle and only one
jack handle extension. Attach
the wheel wrench to the jack
handle extension. Attach the
jack handle to the jack. Position
the jack on the frame behind the
flat tire where the frame sections
overlap. Turn the wheel wrench
clockwise to raise the vehicle.
Raise the vehicle far enough off
the ground so there is enough
room for the spare tire to clear
the ground.
Rear Position Rear Tire Flat:
If the flat tire is
on a rear tire of the vehicle, use
the jack handle (2) and both jack
handle extensions (3). Attach the
wheel wrench (4) to the jack
handle extensions (3). Attach the
jack handle (2) to the jack (1).
Use the jacking pad (5) provided
on the rear axle. Turn the wheel
wrench (4) clockwise to raise the
vehicle. Raise the vehicle far
enough off the ground so there
is enough room for the spare tire
to clear the ground.
{Warning
Getting under a vehicle when it is
lifted on a jack is dangerous.
If the vehicle slips off the jack,
you could be badly injured or
killed. Never get under a vehicle
when it is supported only by
a jack.
{Warning
Raising the vehicle with the jack
improperly positioned can
damage the vehicle and even
make the vehicle fall. To help
avoid personal injury and vehicle
damage, be sure to fit the jack lift
head into the proper location
before raising the vehicle.
4. Remove all of the wheel nuts.
5. Take off the flat tire.
Page 360 of 439

Black plate (69,1)GMC 2015i Yukon Denali/Yukon XL Denali Owner Manual (GMNA-
Localizing-U.S./Canada/Mexico-8431504) - 2015 - CRC - 7/30/14
Vehicle Care 10-69
6. Remove any rust or dirt from thewheel bolts, mounting surfaces,
and spare wheel.
{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 an accident. When
changing a wheel, remove any
rust or dirt from places where the
wheel attaches to the vehicle. In
(Continued)
Warning (Continued)
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.
7. Put the wheel nuts back on with the rounded end of the nuts
toward the wheel after mounting
the spare tire.
{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.
8. Tighten each wheel nut by hand. Then use the wheel wrench to
tighten the nuts until the wheel is
held against the hub. 9. Turn the wheel wrench
counterclockwise to lower the
vehicle. Lower the jack
completely.
10. Tighten the nuts firmly in a
crisscross sequence as shown
by turning the wheel wrench
clockwise.