2004 CADILLAC SRX spare tire

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, 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
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.
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Removing the Spare Tire and Tools
The equipment you’ll need is located in the rear of the
vehicle.
1. If your vehicle has the cargo management system,
remove the storage bin to access the jack.
If your vehicle has the third row seat, remove the
head rest storage tray to access the jack.
A. Wing Nut
B. Jack
C. Wheel Wrench2. Turn the nut holding the jack (and storage tray, if
applicable) counterclockwise and remove it. Then
remove the jack and wheel wrench.
The tools you’ll be using include the jack (A) and
the wheel wrench (B).
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Removing the Spare Tire
The compact spare tire is located under the vehicle,
ahead of the rear bumper. SeeCompact Spare Tire
on page 5-93for more information about the compact
spare.
A. Wheel Wrench
B. Cable
C. Retainer
D. Compact Spare Tire1. Open the storage compartment door of the cargo
management system that is nearest the liftgate
and remove the removable tub.
2. Attach the wheel wrench into the hoist shaft.
3. Turn the wheel 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.
4. To remove the spare tire from the cable, tilt the
retainer and slip it through the wheel opening.
5. After removing the spare tire, turn the wrench
clockwise to raise the cable back up until you
feel two slips or hear two clicks.
Do not store a full-size or a at road tire under the
vehicle. See “Storing a Flat Tire and Tools” later
in this section.
To continue changing the at tire see “Removing the
Flat Tire and Installing the Spare Tire” later in this
section.
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If the spare tire will not lower, the secondary latch may
be engaged causing the tire not to lower. Do the
following to check the cable:
1. Check under the vehicle to see if the cable is
visible.
2. If it’s not visible, see “Secondary Latch System”
following.
If it is visible, rst try to tighten the cable by turning
the wheel wrench clockwise until you hear two
clicks or feel it skip twice. You cannot over-tighten
the cable.
3. Then 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 4 under “Removing the Spare Tire” earlier
in this section.
5. If you still cannot lower the spare tire to the ground,
see “Secondary Latch System” following.Secondary Latch System
Your vehicle has an underbody mounted tire hoist
assembly equipped with a secondary latch system. It’s
designed to stop the compact spare tire from suddenly
falling off your vehicle if the cable holding the spare
tire is damaged. For the secondary latch to work, the tire
must be stowed with the valve stem pointing down.
See “Storing the Spare Tire and Tools” later in
this section for instructions on storing the spare tire
correctly.
{CAUTION:
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 below.
To release the spare tire from the secondary latch, do
the following:
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{CAUTION:
Someone standing too close during the
procedure could be injured by the jack. If the
spare tire does not slide off the jack
completely, make sure no one is behind you or
on either side of you as you pull the jack out
from the spare.
1. If the cable is not visible, start this procedure
at Step 3.
2. Turn the wrench counterclockwise until
approximately 6 inches (15 cm) of cable is exposed.
3. Attach the wheel wrench to the jack and raise the
jack at least 10 turns.
4. Place the jack under the vehicle, ahead of the rear
bumper. Position the center lift point of the jack
under the center of the spare tire.5. Turn the wheel wrench clockwise to raise the jack
until it lifts the secondary latch spring.
6. Keep raising the jack until the spare tire stops
moving upward and is held rmly in place, this
lets you know that the secondary latch has
released.
7. Lower the jack by turning the wheel wrench
counterclockwise. Keep lowering the jack until the
spare tire is resting on the wheel wrench.
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8. Grasp the spare tire with both hands and pull it out
from under the vehicle.
9. Reach under the vehicle and remove the wheel
wrench and jack.
10. When the spare tire has been completely lowered,
tilt the retainer and slip it through the wheel
opening.
11. If the cable is hanging, turn the wrench clockwise to
raise the cable back up.
Have the hoist assembly inspected as soon as you can.
You will not be able to store a spare tire using the
hoist assembly until it has been repaired or replaced.
Removing the Flat Tire and Installing
the Spare Tire
1. Using the at end of the wheel wrench, pry off the
center cap at the notch. Be careful; the edges may
be sharp. Don’t try to remove the cover with
your bare hands.
2. Loosen the wheel nuts - but do not remove
them - using the wheel wrench. (Turn the handle
about 180 degrees, then ip the handle back to the
starting position. This avoids taking the wrench
off the lug nut for each turn.)
3. Find the jacking
location using the
hoisting notches
located in the plastic
molding. The notches
in the plastic molding
are marked with a
triangle shape to help
you nd them.
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6. Raise the jack by turning the wheel wrench
clockwise until the slots in the jack head t into the
metal ange located behind the triangle on the
plastic molding as shown.Notice: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.
7. Put the compact spare tire near you.
8. Raise the vehicle by turning the wheel wrench
clockwise. Raise the vehicle far enough off the
ground for the compact spare tire to t under the
vehicle.
9. Remove all the wheel nuts and take off the at tire.
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10. Remove any rust or dirt
from the wheel bolts,
mounting surfaces
and spare wheel.
{CAUTION:
Rust or dirt on the wheel, or on the parts to
which it is fastened, can make the wheel nuts
become loose after a time. The wheel could
come off and cause an accident. When you
change a wheel, remove any rust or dirt from
the 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 you need to, to
get all the rust or dirt off.
{CAUTION:
Never use oil or grease on studs or nuts. If
you do, the nuts might come loose. Your wheel
could fall off, causing a serious accident.
11. Install the spare tire and put the wheel nuts back on
with the rounded end of the nuts toward the wheel.
Tighten each nut by hand until the wheel is held
against the hub.
12. Lower the vehicle by attaching the wheel wrench to
the jack and turning the wrench counterclockwise.
Lower the jack completely.
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