Page 449 of 528

Black plate (71,1)GMC Yukon/Yukon XL Owner Manual - 2011
Vehicle Care 10-71
If a Tire Goes Flat
It is unusual for a tire to blowout
while you are driving, especially if
you maintain your vehicle's tires
properly. If air goes out of a tire,
it is much more likely to leak out
slowly. But if you should ever have 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
you would use in a skid. In any rear
blowout remove your foot from the
accelerator pedal. Get the vehicle
under control by steering the way
you want the vehicle to go. It maybe very bumpy and noisy, but you
can still steer. 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.
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 your vehicle is a hybrid, see the
hybrid supplement for more
information.
Page 450 of 528

Black plate (72,1)GMC Yukon/Yukon XL Owner Manual - 2011
10-72 Vehicle Care
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. SeeHazard
Warning Flashers on page 6‑5.
{WARNING
Changing a tire can be
dangerous. The vehicle can
slip off the jack and roll over or
fall on you or other people. You
and they could be badly injured or
even killed. Find a level place to
change your tire. To help prevent
the vehicle from moving:
1. Set the parking brake firmly.
2. Put the shift lever in P (Park).
3. If you have a four-wheel-drive vehicle
with a N (Neutral) transfer
(Continued)
WARNING (Continued)
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.
5. Do not allow passengers to remain in the vehicle.
6. Put the wheel blocks at the front and rear of the tire
farthest away from the one
being changed. That would
be the tire on the other side,
at the opposite end of the
vehicle.
When the vehicle has a flat tire (B),
use the following example as a
guide to assist you in the placement
of wheel blocks (A).
A. Wheel Block
B. Flat Tire
The following information explains
how to use the jack and change
a tire.
Tire Changing
Removing the Spare Tire and
Tools
The equipment you will need to
change a flat tire is stored under the
storage tray, which is located on the
driver side trim panel (over the rear
wheelhouse).
Page 451 of 528
Black plate (73,1)GMC Yukon/Yukon XL Owner Manual - 2011
Vehicle Care 10-73
Regular Wheelbase Shown,
Extended Wheelbase Similar
1. Remove the tray to access the tools by pulling up on the finger
depression under the jack
symbol.2. Remove the wing nut (B) used toretain the tool bag by turning it
counterclockwise.
3. Turn the knob (A) on the jack counterclockwise to release the
jack and wheel blocks from the
bracket.
4. Remove the wheel blocks and the wheel block retainer by
turning the wing nut (C)
counterclockwise. The tools you will be using include
the following:
A. Jack
B. Wheel Blocks
C. Jack Handle
D. Jack Handle Extensions
E. Wheel Wrench
Page 452 of 528
Black plate (74,1)GMC Yukon/Yukon XL Owner Manual - 2011
10-74 Vehicle Care
To access the spare tire, refer to the
following graphics and instructions:
A. Hoist Assembly
B. Hoist Shaft
C. Hoist Shaft Access Cover/Hole
D. Jack Handle Extensions
E. Wheel Wrench
F. Hoist Cable
G. Tire/Wheel Retainer
H. Spare Tire (Valve StemPointed Down)
I. Hoist Shaft Access Hole J. Hoist End of Extension Tool
K. Spare Tire Lock
1. Open the hoist shaft access
door (C) on the bumper to
access the spare tire lock (K).
2. To remove the spare tire lock, insert the ignition key, turn it
clockwise and then pull it
straight out.
3. Assemble the two jack handleextensions (D) and wheel
wrench (E) as shown.
4. Insert the open end of theextension (J) through the hole in
the rear bumper (I) (hoist shaft
access hole).
Be sure the hoist end (J) of the
extension (D) connects to the
hoist shaft (B). The ribbed
square end of the extension is
used to lower the spare tire.
Page 453 of 528
Black plate (75,1)GMC Yukon/Yukon XL Owner Manual - 2011
Vehicle Care 10-75
5. Turn the wheel wrench (E)counterclockwise to lower the
spare tire (H) to the ground.
Continue to turn the wheel
wrench until the spare tire can
be pulled out from under the
vehicle.
If the spare tire does not lower to
the ground, the secondary latch
is engaged causing the tire not
to lower. See Secondary Latch
System on page 10‑84 for more
information.
6. Use the wheel wrench hook that
allows you to pull the hoist cable
towards you, to assist in
reaching the spare tire.7. Tilt the tire toward the vehiclewith some slack in the cable to
access the tire/wheel retainer.
Separate the retainer from the
guide pin by sliding the retainer
up the pin while pressing down
on the latch.
Page 454 of 528
Black plate (76,1)GMC Yukon/Yukon XL Owner Manual - 2011
10-76 Vehicle Care
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 10‑71 for more
information.
2. If your vehicle has a center cap that covers the wheel fasteners,
place the chisel end of the wheel
wrench in the slot on the wheel
and gently pry the cap out. If the wheel has a bolt-on hub
cap, loosen the plastic nut caps
by turning the wheel wrench
counterclockwise. The plastic
nut caps will be retained in the
hub cap after it is removed from
the wheel.3. 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.
Page 455 of 528
Black plate (77,1)GMC Yukon/Yukon XL Owner Manual - 2011
Vehicle Care 10-77
Jacking Locations (Overall View)A. Front Position
B. Rear Position
4. Position the jack under the vehicle as shown.Front Position –1500 Models
Front Position –2500 Models Front Tire Flat:
If the flat tire is
on a front tire of the vehicle, you
will need to 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 (A). 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.
Page 456 of 528

Black plate (78,1)GMC Yukon/Yukon XL Owner Manual - 2011
10-78 Vehicle Care
Rear Position–1500 Models
Rear Position –All Other Models Rear Tire Flat:
If the flat tire is
on a rear tire of the vehicle,
you will need to use the jack
handle (B) and both jack handle
extensions (C). Attach the wheel
wrench (D) to the jack handle
extensions (C). Attach the jack
handle (B) to the jack (A). Use
the jacking pad provided on
the rear axle. Turn the wheel
wrench (D) 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
jacked up 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.
5. Remove all of the wheel nuts.
6. Take off the flat tire.