spare tire GMC ACADIA 2007 User Guide

The purpose of regular rotation is to achieve more
uniform wear for all tires on the vehicle. The
rst rotation is the most important. SeeScheduled
Maintenance on page 502.
When rotating your tires, always use the correct
rotation pattern shown here.
Do not include the compact spare tire in your tire
rotation.
After the tires have been rotated, adjust the front
and rear ination pressures as shown on the
Tire and Loading Information label.Make certain that all wheel nuts are properly
tightened. See “Wheel Nut Torque” under
Capacities and Specifications on page 497.
{CAUTION:
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
you change a wheel, remove any rust or
dirt from places where the wheel attaches
to the vehicle. In an emergency, you can
use a cloth or a paper towel to do this;
but be sure to use a scraper or wire brush
later, if needed, to get all the rust or dirt
off. SeeChanging a Flat Tire on page 458.
449

{CAUTION:
Mixing tires could cause you to lose
control while driving. If you mix tires of
different sizes, brands, or types (radial
and bias-belted tires), the vehicle may not
handle properly, and you could have a
crash. Using tires of different sizes,
brands, or types may also cause damage
to your vehicle. Be sure to use the correct
size, brand, and type of tires on all
wheels. It is all right to drive with your
compact spare temporarily, as it was
developed for use on your vehicle.
SeeCompact Spare Tire on page 477.
{CAUTION:
If you use bias-ply tires on your vehicle,
the wheel rim anges could develop
cracks after many miles of driving. A tire
and/or wheel could fail suddenly, causing
a crash. Use only radial-ply tires with the
wheels on your vehicle.
If you must replace your vehicle’s tires with those
that do not have a TPC Spec number, make
sure they are the same size, load range,
speed rating, and construction type (radial and
bias-belted tires) as your vehicle’s original tires.
Your vehicle’s original equipment tires are listed on
the Tire and Loading Information label. This label
is attached to the vehicle’s center pillar (B-pillar).
SeeLoading Your Vehicle on page 361, for
more information about the Tire and Loading
Information label and its location on your vehicle.
451

Uniform Tire Quality Grading
Quality grades can be found where applicable on
the tire sidewall between tread shoulder and
maximum section width. For example:
Treadwear 200 Traction AA Temperature A
The following information relates to the system
developed by the United States National Highway
Traffic Safety Administration (NHTSA), which
grades tires by treadwear, traction, and
temperature performance. This applies only to
vehicles sold in the United States. The grades are
molded on the sidewalls of most passenger car
tires. The Uniform Tire Quality Grading (UTQG)
system does not apply to deep tread, winter-type
snow tires, space-saver, or temporary use
spare tires, tires with nominal rim diameters of
10 to 12 inches (25 to 30 cm), or to some
limited-production tires.
While the tires available on General Motors
passenger cars and light trucks may vary with
respect to these grades, they must also conform
to federal safety requirements and additional
General Motors Tire Performance Criteria (TPC)
standards.
Treadwear
The treadwear grade is a comparative rating
based on the wear rate of the tire when tested
under controlled conditions on a specied
government test course. For example, a tire
graded 150 would wear one and a half (1.5) times
as well on the government course as a tire
graded 100. The relative performance of tires
depends upon the actual conditions of their use,
however, and may depart signicantly from
the norm due to variations in driving habits, service
practices, and differences in road characteristics
and climate.
Traction – AA, A, B, C
The traction grades, from highest to lowest, are
AA, A, B, and C. Those grades represent the tire’s
ability to stop on wet pavement as measured
under controlled conditions on specied
government test surfaces of asphalt and concrete.
A tire marked C may have poor traction
performance.
Warning:The traction grade assigned to this tire
is based on straight-ahead braking traction
tests, and does not include acceleration, cornering,
hydroplaning, or peak traction characteristics.
453

The following information will tell you next how to
use the jack and change a tire.
Removing the Spare Tire and Tools
The tools needed to remove the spare tire are
located in the storage compartment on the driver
side, at the rear of the vehicle.
1.Open the jack storage compartment by squeezing
down on the latch tab and pulling the cover off.
A.Tool Bag
B.Wing Bolt
C.Jack
2.Remove the wing bolt (B) by turning it
counterclockwise.
3.Push the jack (C) up out of the holding bracket.
459

4. Turn the jack on its side, with the bottom
facing toward you.
5. Pull the jack straight out, bottom rst.
The tools you will be using include the jack (A)
and lug wrench (B).Removing the Spare Tire
The compact spare tire is located under the
vehicle, in front of the rear bumper. SeeCompact
Spare Tire on page 477for more information
about the compact spare.
A. Rear
Convenience
Center
B. Lug Wrench
C. Storage
Compartment
Cap HoleD. Hoist Shaft
E. Compact
Spare Tire
F. Retainer
G. Hoist Shaft
Assembly
460

1. Open the storage compartment door of the
convenience center that is nearest the
liftgate.
2. Move the carpet cutout that is located through
the hole of the storage compartment.
3. Attach the lug wrench into the hoist shaft.
4. Turn the lug wrench counterclockwise to lower
the spare tire to the ground. Continue turning
the wrench until the spare tire can be
pulled out from under the vehicle.
5. Tilt the retainer and slip it through the wheel
opening to remove the spare tire from the
cable.
6. Turn the wrench clockwise to raise the cable
back up after removing the spare tire.
Do not store a full-size or a at road tire under
the vehicle. SeeStoring a Flat or Spare Tire
and Tools on page 472.
461

To continue changing the at tire, seeRemoving
the Flat Tire and Installing the Spare Tire on
page 463.
If the spare tire will not lower, the secondary latch
could be engaged.Do the following to check the cable:
1. Check under the vehicle to see if the cable is
visible.
2. If it is not visible, seeSecondary Latch
System on page 468.
If it is visible, rst try to tighten the cable by
turning the lug wrench clockwise until you hear
two clicks or feel it skip twice. You cannot
over-tighten the cable.
3. Loosen the cable by turning the wrench
counterclockwise three or four turns.
4. If the spare tire has not lowered, tighten the
cable all the way and then loosen it at least
two times.
If the spare tire did lower to the ground,
continue with Step 5 under “Removing the
Spare Tire (Vehicles with the Rear
Convenience Center)” listed previously.
5. If you still cannot lower the spare tire to the
ground, seeSecondary Latch System on
page 468.
462

Removing the Flat Tire and
Installing the Spare Tire
1. It is recommended that you do a safety check
before preceding. SeeChanging a Flat Tire
on page 458for more information.
2. If the vehicle has a wheel cover, loosen the
plastic nut caps with the wheel wrench.
They will not come off. Then, using the at
end of the wheel wrench, pry along the edge
of the cover until it comes off. Be careful;
the edges may be sharp. Do not try to remove
the cover with your bare hands.
Store the wheel cover securely in the rear of
the vehicle until you have the at tire
repaired or replaced.
If your vehicle has aluminum wheels, remove
the wheel nut caps using the wheel wrench.3. Loosen the wheel nuts — but do not
remove them — using the lug wrench.
For wheels with a wheel lock key, use the
wheel lock key between the lock nut and
lug wrench. The key is supplied in the front
passenger door pocket.
Notice:If your vehicle has wheel locks and an
impact wrench is used to remove the wheel
nuts, the lock nut or wheel lock key could be
damaged. Do not use an impact wrench to
remove the wheel nuts if your vehicle has
wheel locks.
463

4. To identify the appropriate jacking location,
nd the triangle about 12 inches (30.5 cm)
from the front tire or about 10.5 inches
(27 cm) from the rear tire.
The triangle is located near each wheel on the
vehicle’s exterior.Notice:If a jack is used to raise the vehicle
without positioning it correctly, your vehicle
could be damaged. When raising your vehicle
on a jack, avoid contact with the rear axle
control arms.
5. Do not raise the vehicle yet. Put the compact
spare tire near you.
{CAUTION:
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.
464

{CAUTION:
Raising your 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 t the jack lift head
into the proper location before raising
the vehicle.
6. Attach the lug wrench to the jack, and turn
the wrench clockwise to raise the jack head
3 inches (7.6 cm).
7. Place the jack under the vehicle as identied
in Step 3. Raise the vehicle by turning the
lug wrench clockwise in the jack. Raise
the vehicle far enough off the ground so that
there is enough room for the spare tire to
t under the wheel well.
8. Remove all the wheel nuts and take off the
at tire.9. Remove the plastic spare tire heat shield by
pulling the rubber latch. Store the plastic
spare tire heat shield. SeeStoring a Flat or
Spare Tire and Tools on page 472for
more information.
465