2008 CADILLAC STS Owners Manual

Removing the Flat Tire and
Installing the Spare Tire
1. Do a safety check before proceeding. SeeChanging
a Flat Tire on page 5-96for more information.
2. Loosen all of the wheel nuts, but do not remove
them yet, 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 vehicle’s jacking location using the
diagram above and corresponding V–shaped
notches located in the plastic molding on the
vehicle’s frame. The notches in the plastic molding
are marked with a triangle shape.
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4. Attach the wheel wrench to the jack.
{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.
{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.
{CAUTION:
Lifting a vehicle and getting under it to do
maintenance or repairs is dangerous without
the appropriate safety equipment and training.
The jack provided with your vehicle is
designed only for changing a at tire. If it is
used for anything else, you or others could be
badly injured or killed if the vehicle slips off
the jack. Use the jack provided with your
vehicle only for changing a at tire.
Notice:If you position the jack under the rocker
molding and attempt to raise the vehicle, you could
break the molding and/or cause other damage to
your vehicle. Always position the jack so that when
the jack head is raised, it will t rmly in the
notch located inboard from the rocker molding.
5. Turn the wheel wrench counterclockwise to lower
the jack lift head until the jack ts under the
vehicle.
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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.
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.
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9. Remove all the wheel
nuts and the at tire.
{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.
CAUTION: (Continued)
CAUTION: (Continued)
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 5-96.
{CAUTION:
Never use oil or grease on studs or nuts.
Because the nuts might come loose. The
vehicle’s wheel could fall off, causing a crash.
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10. Remove any rust or dirt
from the wheel bolts,
mounting surfaces, and
spare wheel.
11. Install the spare tire.
12. Put the wheel nuts back on with the rounded end of
the nuts toward the wheel.
13. Tighten each wheel nut by turning it clockwise with
your hand until the wheel is held against the hub.14. Lower the vehicle by turning the wheel wrench
counterclockwise. Lower the jack completely.
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{CAUTION:
Incorrect or improperly tightened wheel nuts
can cause the wheel to come loose and even
come off. This could lead to a crash. If you
have to replace them, be sure to get new
original equipment wheel nuts. Stop
somewhere as soon as you can and have the
nuts tightened with a torque wrench to the
proper torque specication. SeeCapacities
and Specifications on page 5-128for wheel nut
torque specication.
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 specication. SeeCapacities and
Specifications on page 5-128for the wheel nut
torque specication.15. Tighten the wheel nuts
rmly in a crisscross
sequence as shown.
Storing a Flat or Spare Tire
and Tools
{CAUTION:
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.
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Full-Size Tire and Tools
After you have put the compact spare tire on your
vehicle, you will need to do the following to store the at
tire in your trunk.
1. Open the trunk. SeeTrunk on page 2-16.
2. Store the jack and wheel wrench in the jack
container in the trunk.
When storing the jack, in the container, it must be
raised until the screw end is ush with the edge
of the jack.
3. Store the at tire as far forward in the trunk as
possible.
The compact spare is for temporary use only. Replace
the compact spare tire with a full-size tire as soon
as you can.
Compact Spare Tire and Tools
Use the following diagram as a guide for storing the
compact spare tire and tools in the trunk:A. Compact
Spare Tire
Cover
B. Plastic Wing
Nut
C. RetainerD. Jack Container
Package (With Wheel
Wrench and Jack)
E. Compact Spare Tire
F. Foam Support
G. Bolt
1. Open the trunk. SeeTrunk on page 2-16.
2. Make sure the foam support (F) is in place in the
trunk area.
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3. Reinstall the compact spare tire (E) making sure to
line up the wheel center hole with the bolt (G) and
place on the compartment oor.
4. Insert the jack container (D) with wheel wrench and
jack into the center of the compact spare tire
making sure to line up the wheel nut hole with the
bolt (G) on the compartment oor.
5. Secure the tire and wheel with the retainer (C) and
wing nut (B).
6. Reinstall the compact spare tire cover (A).
Compact Spare Tire
Although the compact spare tire was fully inated when
the vehicle was new, it can lose air after a time.
Check the ination pressure regularly. It should be
60 psi (420 kPa).
After installing the compact spare on the vehicle, you
should stop as soon as possible and make sure the spare
tire is correctly inated. The compact spare is made to
perform well at speeds up to 65 mph (105 km/h) for
distances up to 3,000 miles (5 000 km). The tire ination
monitor system must be calibrated after installing or
removing the compact spare. SeeTire Pressure Monitor
System on page 5-68. The system may not work correctly
when the compact spare is installed on the vehicle.It’s best to replace the spare with a full-size tire as soon
as soon as possible. The spare will last longer and be in
good shape if needed it again.
If your vehicle has All Wheel Drive (AWD) it could also
have an StabiliTrak
®3. SeeStabiliTrak®System on
page 4-8for more information. If the compact spare tire
is installed on a vehicle with the StabiliTrak
®3
System, the vehicle operates in the Stability Secure
Mode. The STABILITY SECURE MODE message
displays on the Driver Information Center (DIC). See
DIC Warnings and Messages on page 3-80for
more information.
Notice:When the compact spare is installed, do
not take your vehicle through an automatic car wash
with guide rails. The compact spare can get
caught on the rails. That can damage the tire and
wheel, and maybe other parts of your vehicle.
Do not use the compact spare on other vehicles.
And do not mix the compact spare tire or wheel with
other wheels or tires. They will not t. Keep the
spare tire and its wheel together.
Notice:Tire chains will not t your compact spare.
Using them can damage your vehicle and can
damage the chains too. Do not use tire chains on
your compact spare.
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