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374 Vehicle Care
Circuit
Breakers/ Minifuses Usage
F40 –
F41 –
F42 Auxiliary Power Outlet (CB)/
Lighter
(mini-fuse)
Rear Compartment
Fuse Block
The rear compartment fuse
block is in the cargo area, on
the driver side of the vehicle behind the lower trim panel.
To open, turn the latch with a
flat-bladed tool and pull the
trim panel from the edges to
fold it down.
The label for this fuse block is
in the spare tire area, on the
foam under the cargo floor.
The vehicle may not be
equipped with all of the fuses,
relays, and features shown.
Fuses Usage
F1 –
F2 Trailer Battery 1
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Vehicle Care 397
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.(Continued)
Warning (Continued)
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 0395
and Accessories and
Modifications 0338.
Uniform Tire Quality
Grading
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 tires, compact
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.
Quality grades can be
found where applicable on
the tire sidewall between
tread shoulder and
maximum section width.
For example:
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402 Vehicle Care
{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 vehicle in P (Park).
3. Turn the vehicle off and do not restart the vehicle
while it is raised.
4. Do not allow passengers to remain in the vehicle.
5. 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
The following information
explains how to repair or
change a tire.
Tire Changing
Performance Brake
Package RPO J56
The original spare tire/wheel
will not fit onto the front axle if
equipped with the
performance brake package RPO J56. If there is a flat tire
on the front axle, a tire/wheel
from the rear axle must be
used to make the repair. The
spare tire will then replace the
tire/wheel that is removed
from the rear axle.
If equipped with the
performance brake package
RPO J56, and the flat tire is on
the front axle, stop after
performing all steps in
Removing the Spare Tire and
Tools and do the following.
Otherwise, continue with the
procedure:
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Vehicle Care 403
1. Remove the rear tire andreplace it with the spare
tire by performing all steps
in Removing the Flat Tire
and Installing the
Spare Tire.
2. Perform all steps in Removing the Flat Tire and
Installing the Spare Tire
again this time replacing
the flat front tire with the
rear tire.
3. Proceed to Storing a Flat or Spare Tire and Tools.
Removing the Spare Tire
and Tools
To access the spare tire and
tools:
1. Open the liftgate. See Liftgate 025.
2. Remove the cargo management system
divider. See Cargo
Management System
0108.
3. Pull up on the handle to lift
the load floor. Use the
hook to hold the load floor
open. See Rear Storage
0104.4. Turn the wing nut (4)
counterclockwise to
remove the jack (1), wheel
wrench (2), and strap (3).
Place the jack and tools
near the tire being
changed.
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404 Vehicle Care
5. Remove the nut retainingthe spare tire.
6. Remove the spare tire and place it next to the tire
being changed.
Removing the Flat Tire
and Installing the
Spare Tire
1. Do a safety check beforeproceeding. See If a Tire
Goes Flat 0401.
2. Turn the wheel wrench
counterclockwise to loosen
all the wheel nuts, but do
not remove them yet.
{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.
{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
(Continued)
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Vehicle Care 405
Warning (Continued)
the jack. If a jack is provided
with the vehicle, only use it
for changing a flat tire.
Caution
Using a jack to raise the
vehicle without positioning it
correctly could damage your
vehicle. When raising your
vehicle on a jack, be sure to
position it correctly under
the frame and avoid contact
with the plastic molding.
3. Attach the wrench to the jack by fitting the hex end
of the wrench over the hex
head of the jack.
4. Place the jack under the vehicle.
Caution
Make sure that the jack lift
head is in the correct
position or you may damage
(Continued)
Caution (Continued)
your vehicle. The repairs
would not be covered by
your warranty.
5. Position the jack lift headat the jack location nearest
the tire being changed.
The jacking location is
indicated by a half circle
notch in the metal flange.
The jack must not be used
in any other position.
6. Turn the wheel wrenchclockwise to raise the jack
until the slot in the jack lift
head fits into the metal
flange located behind the
cut out on the plastic
molding.
7. Raise the vehicle by turning the jack handle
clockwise. Raise the
vehicle far enough off the
ground so there is enough
room for the road tire to
clear the ground.
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406 Vehicle Care
8. Remove all of thewheel nuts.
9. Remove the tire being changed.
{Warning
Rust or dirt on a wheel,
or on the parts to which it
is fastened, can cause
wheel nuts to become
loose over time. The
wheel could come off and
cause a crash. When
changing a wheel, remove
any rust or dirt from
(Continued)
Warning (Continued)
places where the wheel
attaches to the vehicle. In
an emergency, a cloth or
paper towel can be used;
however, use a scraper
or wire brush later to
remove all rust or dirt.
10. Remove any rust or dirt from the wheel bolts,
mounting surfaces, and
spare wheel.
11. Place the spare tire on the wheel-mounting surface.
{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.
12. Reinstall the wheel nuts. Tighten each nut by hand
until the wheel is held
against the hub.
13. Lower the vehicle by turning the jack handle
counterclockwise.
{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
(Continued)
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Vehicle Care 407
Warning (Continued)
aftermarket manufacturer
when using accessory
locking wheel nuts. See
Capacities and
Specifications0438 for
original equipment wheel nut
torque specifications.
Caution
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 0438 for the
wheel nut torque
specification.14. Tighten the wheel nuts firmly in a crisscross
sequence, as shown.
15. Lower the jack all the way and remove the jack from
under the vehicle.
16. Tighten the wheel nuts firmly with the wheel
wrench.
Storing a Flat or Spare
Tire and Tools
{Warning
Storing a jack, a tire,
or other equipment in the
passenger compartment of
the vehicle could cause
injury. In a sudden stop or
collision, loose equipment
could strike someone. Store
all these in the proper place.
To store the flat or spare tire
and tools: 1. Open the liftgate. See Liftgate 025.
2. Replace the tools as they were stored in the rear
storage compartment and
put the compartment
cover back on.
3. Place the tire, lying flat, in the rear storage
compartment.