page 9 GMC YUKON 2013 Owner's Manual

Black plate (56,1)GMC Yukon/Yukon XL Owner Manual - 2013 - CRC 2nd edition - 8/15/12
10-56 Vehicle Care
inflation pressure, and check for
damaged tires or wheels. If the
unusual wear continues after the
rotation, check the wheel
alignment. SeeWhen It Is Time
for New Tires on page 10‑57
and Wheel Replacement on
page 10‑61.
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 Pressure on page 10‑50
and
Vehicle Load Limits on
page 9‑16.
Reset the Tire Pressure Monitor
System. See Tire Pressure
Monitor Operation on
page 10‑52.
Check that all wheel nuts are
properly tightened. See “Wheel
Nut Torque” underCapacities
and Specifications on
page 12‑2.
{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
(Continued)
WARNING (Continued)
off and cause an accident. 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 center of the
wheel hub with wheel bearing
grease after a wheel change or
tire rotation to prevent corrosion
or rust build-up. Do not get
grease on the flat wheel
mounting surface or on the
wheel nuts or bolts.

Black plate (57,1)GMC Yukon/Yukon XL Owner Manual - 2013 - CRC 2nd edition - 8/15/12
Vehicle Care 10-57
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
commercial truck tires may not have
treadwear indicators. SeeTireInspection on page 10‑55
andTire
Rotation on page 10‑55 for
additional information.
The rubber in tires ages over time.
This also applies to the spare tire,
if the vehicle has one, even if it is
never used. Multiple factors
including temperatures, loading
conditions, and inflation pressure
maintenance affect how fast aging
takes place. GM recommends that
tires, including the spare if
equipped, be replaced after six
years, regardless of tread wear. The
tire manufacturer date is the last
four digits of the DOT Tire
Identification Number (TIN) which is
molded into one side of the tire
sidewall. The first two digits
represent the week (01-52) and the
last two digits, the year. For
example, the third week of the year
2010 would have a four-digit DOT
date of 0310.
Vehicle Storage
Tires age when stored normally
mounted on a parked vehicle. Park
a vehicle that will be stored for at
least a month in a cool, dry, clean
area away from direct sunlight to
slow aging. This area should be free
of grease, gasoline or other
substances that can deteriorate
rubber.
Parking for an extended period can
cause flat spots on the tires that
may result in vibrations while
driving. When storing a vehicle for
at least a month, remove the tires or
raise the vehicle to reduce the
weight from the tires.
Buying New Tires
GM has developed and matched
specific tires for the vehicle. The
original equipment tires installed
were designed to meet General
Motors Tire Performance Criteria
Specification (TPC Spec)
system rating. When

Black plate (58,1)GMC Yukon/Yukon XL Owner Manual - 2013 - CRC 2nd edition - 8/15/12
10-58 Vehicle Care
replacement tires are needed,
GM strongly recommends
buying tires with the same TPC
Spec rating.
GM's exclusive TPC Spec
system considers over a dozen
critical specifications that impact
the overall performance of the
vehicle, including brake system
performance, ride and handling,
traction control, and tire
pressure monitoring
performance. GM's TPC Spec
number is molded onto the tire's
sidewall near the tire size. If the
tires have an all-season tread
design, the TPC Spec number
will be followed by MS for mud
and snow. SeeTire Sidewall
Labeling on page 10‑43 for
additional information.
GM recommends replacing worn
tires in complete sets of four.
Uniform tread depth on all tires
will help to maintain the performance of the vehicle.
Braking and handling
performance may be adversely
affected if all the tires are not
replaced at the same time.
If proper rotation and
maintenance have been done,
all four tires should wear out at
about the same time. See
Tire
Rotation on page 10‑55 for
information on proper tire
rotation. However, if it is
necessary to replace only one
axle set of worn tires, place the
new tires on the rear axle.
{WARNING
Tires could explode during
improper service. Attempting
to mount or dismount a tire
could cause injury or death.
Only your dealer or authorized
tire service center should
mount or dismount the tires.
{WARNING
Mixing tires of different sizes,
brands, or types may cause
loss of control of the vehicle,
resulting in a crash or other
vehicle damage. Use the
correct size, brand, and type
of tires on all wheels.
This vehicle may have a
different size spare than the
road tires originally installed
on the vehicle. When new, the
vehicle included a spare tire
and wheel assembly with a
similar overall diameter as the
road tires and wheels, so it is
all right to drive on it. The
spare tire was developed for
use on this vehicle and will not
affect vehicle handling.

Black plate (59,1)GMC Yukon/Yukon XL Owner Manual - 2013 - CRC 2nd edition - 8/15/12
Vehicle Care 10-59
{WARNING
Using bias-ply tires on the
vehicle may cause the wheel
rim flanges to develop cracks
after many miles of driving.
A tire and/or wheel could fail
suddenly and cause a crash.
Use only radial-ply tires with
the wheels on the vehicle.
If the vehicle tires must be
replaced with a tire that does not
have a TPC Spec number, make
sure they are the same size,
load range, speed rating, and
construction (radial) as the
original tires.
Vehicles that have a tire
pressure monitoring system
could give an inaccurate
low-pressure warning if non-TPC
Spec rated tires are installed.
See Tire Pressure Monitor
System on page 10‑51. The Tire and Loading
Information label indicates the
original equipment tires on the
vehicle. See
Vehicle Load Limits
on page 9‑16 for the label
location and more information
about the Tire and Loading
Information label.
Different Size Tires and
Wheels
If wheels or tires are installed that
are a different size than the original
equipment wheels and tires, vehicle
performance, including its braking,
ride and handling characteristics,
stability, and resistance to rollover
may be affected. If the vehicle has
electronic systems such as antilock
brakes, rollover airbags, traction
control, electronic stability control,
or All-Wheel Drive, the performance
of these systems can also be
affected.
{WARNING
If different sized wheels are used,
there may not be an acceptable
level of performance and safety if
tires not recommended for those
wheels are selected. This
increases the chance of a crash
and serious injury. Only use GM
specific wheel and tire systems
developed for the vehicle, and
have them properly installed by a
GM certified technician.
See Buying New Tires on
page 10‑57 andAccessories and
Modifications on page 10‑3.

Black plate (64,1)GMC Yukon/Yukon XL Owner Manual - 2013 - CRC 2nd edition - 8/15/12
10-64 Vehicle Care
WARNING (Continued)
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 the vehicle is a hybrid, see the
hybrid supplement for more
information.
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 6‑5.
{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
(Continued)
WARNING (Continued)
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.
5. Do not allow passengers to remain in the vehicle.
6. Place wheel blocks on both sides of the tire at the
opposite corner of the tire
being changed. When the vehicle has a flat tire (B),
use the following example as a
guide to assist in the placement of
the wheel blocks (A).
A. Wheel Block
B. Flat Tire
The following information explains
how to use the jack and change
a tire.

Black plate (67,1)GMC Yukon/Yukon XL Owner Manual - 2013 - CRC 2nd edition - 8/15/12
Vehicle Care 10-67
5. Turn the wheel wrenchcounterclockwise 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.
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 10‑76 for more
information.
6. Use the wheel wrench hook to
pull the hoist cable closer 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.

Black plate (68,1)GMC Yukon/Yukon XL Owner Manual - 2013 - CRC 2nd edition - 8/15/12
10-68 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 10‑63 for more
information.
2. If the 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 loosenall the wheel nuts. Turn the
wheel wrench counterclockwise
to loosen the wheel nuts. Do not
remove the wheel nuts yet.

Black plate (72,1)GMC Yukon/Yukon XL Owner Manual - 2013 - CRC 2nd edition - 8/15/12
10-72 Vehicle Care
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 a crisscross 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
aftermarket manufacturer when
using accessory locking wheel
nuts. See Capacities and
Specifications on page 12‑2 for
original equipment wheel nut
torque specifications.
Notice: 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 on
page 12‑2 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.
.For center caps, line up the tab
on the center cap with the slot in
the wheel. The cap only goes in
one way. Place the cap on the
wheel and press until it snaps
into place.
.For bolt-on hub caps, line up the
plastic nut caps with the wheel
nuts and tighten clockwise by
hand to get them started. Then
tighten with the wheel wrench
until snug.

Black plate (76,1)GMC Yukon/Yukon XL Owner Manual - 2013 - CRC 2nd edition - 8/15/12
10-76 Vehicle Care
6. Return the storage tray to itsoriginal stored position.
Secondary Latch System
This vehicle has an
underbody-mounted tire hoist
assembly equipped with a
secondary latch system. It is
designed to stop the spare tire from
suddenly falling off your vehicle. For
the secondary latch to work, the
spare must be installed with the
valve stem pointing down. See “Storing a Flat or Spare Tire and
Tools”
underTire Changing on
page 10‑65.
{WARNING
Before beginning this procedure
read all the instructions. Failure to
read and follow the instructions
could damage the hoist assembly
and you and others could get
hurt. Read and follow the
instructions listed next. To release the spare tire from the
secondary latch:
1. Check under the vehicle to see if
the cable end is visible. If the
cable is not visible proceed to
Step 6.
2. If it is visible, first try to tighten the cable by turning the wheel
wrench clockwise until you hear
two clicks or feel it skip twice.
You cannot overtighten the
cable.

Black plate (77,1)GMC Yukon/Yukon XL Owner Manual - 2013 - CRC 2nd edition - 8/15/12
Vehicle Care 10-77
3. Loosen the cable by turning thewrench counterclockwise three
or four turns.
4. Repeat this procedure at least two times. If the spare tire
lowers to the ground, continue
with Step 5 under “Removing the
Spare Tire and Tools” underTire
Changing on page 10‑65.
5. If the spare does not lower, turn the wrench counterclockwise
until approximately 15 cm (6 in)
of cable is exposed.
6. Stand the wheel blocks on their shortest ends, with the backs
facing each other.
A. Jack
B. Wheel Blocks
7. Place the bottom edge of the jack (A) on the wheel blocks (B),
separating them so that the jack
is balanced securely.
8. Attach the jack handle,extension, and wheel wrench to
the jack and place it (with the
wheel blocks) under the vehicle
toward the front of the rear
bumper.
9. Position the center lift point ofthe jack under the center of the
spare tire.