CADILLAC STS 2005 1.G Owners Manual

{CAUTION:
Changing a tire can be dangerous. The vehicle
can slip off the jack and roll over or fall on you
or other people. You and they could be badly
injured or even killed. Find a level place to
change your tire. To help prevent the vehicle
from moving:
1. Set the parking brake rmly.
2. Put the shift lever in PARK (P).
3. Turn off the engine and do not restart
while the vehicle is raised.
4. Do not allow passengers to remain in the
vehicle.
To be even more certain the vehicle will not
move, you should put blocks at the front and
rear of the tire farthest away from the one
being changed. That would be the tire, on the
other side, at the opposite end of the vehicle.When your vehicle has a at tire, use the following
example as a guide to assist you in the placement of
wheel blocks.
The following information will tell you next how to use
the jack and change a tire.
5-75

Removing the Spare Tire and Tools
The equipment you will need is in the trunk.
To gain access to the spare tire and jacking equipment,
do the following:
1. Open the trunk. SeeTrunk on page 2-14for more
information.
2. Remove the compact spare tire cover.
3. Turn the nut holding the jack counterclockwise and
remove it. Then remove the jack and wheel wrench.
4. Remove the compact spare tire. SeeCompact
Spare Tire on page 5-84for more information
about the compact spare tire.
5-76

The tools you will be using include the jack (A) and the
wheel wrench (B).
Removing the Flat Tire and
Installing the Spare Tire
If your vehicle has wheel covers, use the at end of the
wheel wrench to remove the covers. Turn the wheel
wrench clockwise to gently pry off the wheel cover.
Be careful not to scratch the aluminum wheel edge and
do not try to remove the wheel cover with your hands.
5-77

If your vehicle has wheel nut caps, turn the wheel
wrench counterclockwise to remove the caps.
Once the wheel cover and wheel nut caps have been
removed, use the following steps to remove the at tire
and install the spare tire.1. Place the wheel wrench (A) securely over the wheel
nut (B). Turn the wheel wrench counterclockwise to
loosen all the wheel nuts. Do not remove them yet.
5-78

2. Find the jacking location using the diagram above
and corresponding hoisting notches (A and B)
located in the plastic molding. The notches in the
plastic molding are marked with a triangle shape to
help you nd them.
{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.
3. Attach the wheel wrench to the jack.
4. Turn the wheel wrench counterclockwise to lower
the jack lift head until the jack ts under the
vehicle.
5-79

5. 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.
6. Put the compact spare tire near you.7. 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.
8. Remove all the wheel nuts and take off the at tire.
{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.
5-80

9. Remove any rust or dirt
from the wheel bolts,
mounting surfaces
and spare wheel.
{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.
10. Place the compact spare tire on the wheel-mounting
surface.11. Put the wheel nuts
back on with the
rounded end of the
nuts toward the wheel.
12. Tighten each wheel nut by turning it clockwise with
your hand until the wheel is held against the hub.
5-81

13. Lower the vehicle by turning the wheel wrench
counterclockwise. Lower the jack completely.
{CAUTION:
Incorrect wheel nuts or improperly tightened
wheel nuts can cause the wheel to come loose
and even come off. This could lead to an
accident. Be sure to use the correct wheel
nuts. If you have to replace them, be sure to
get new GM 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 5-106for wheel nut
torque specication.
5-82

14. Tighten the wheel nuts
rmly in a crisscross
sequence as shown.
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 5-106for the wheel nut
torque specication.
Notice:Wheel covers will not t on your compact
spare. If you try to put a wheel cover on the compact
spare, you could damage the cover or the spare.
Do not try to put a wheel cover on your compact spare
tire. It will not t. Store the wheel cover in the trunk
until you have the at tire repaired or replaced.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.
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. Store the jack and wheel wrench in their
compartment 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.
2. 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.
5-83

Use the following diagram as a guide for storing the
compact spare tire in the trunk:
A. Compact Spare
Tire Cover
B. Plastic Wing Nut
C. Retainer
D. Jack Container
with Wheel Wrench
and JackE. Compact
Spare Tire
F. Foam Insert
G. Bolt
H. Wheel Wrench
I. Jack
J. Jack ContainerCompact Spare Tire
Although the compact spare tire was fully inated when
your 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 your vehicle, you
should stop as soon as possible and make sure
your 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),
so you can nish your trip and have your full-size
tire repaired or replaced where you want. Of course, it
is best to replace your spare with a full-size tire as soon
as you can. Your spare will last longer and be in
good shape in case you need it again.
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 your compact spare on other vehicles.
And do not mix your compact spare tire or wheel with
other wheels or tires. They will not t. Keep your
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.
5-84