2006 CADILLAC DTS PROFESSIONAL Owners Manual

Removing the Flat Tire and
Installing the Spare Tire
1. For models having aluminum wheels with a center
wheel cover, use the at end of the wheel wrench
to gently pry the wheel covers off. Be careful
not to scratch the aluminum wheel edge and do not
try to remove it with your hands. Then loosen the
wheel nuts with the wheel wrench. Do not remove
them yet.2. For models with exposed lug nuts, loosen
them using the wheel wrench. Do not remove
them yet.
5-75

3. Find the jacking location from the diagram above
and use the corresponding cutouts located in the
plastic molding.
The front location is (A) 8.5 inches (21 cm) from the
rear edge of the front wheel well, and the rear
location (B) is 3.5 inches (8.5 cm) from the front
edge of the rear wheel well.
The notches may also be labeled JACK with an
arrow pointing to the jacking location on the vehicle.
{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.
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.
5-76

4. Turn the jack handle counterclockwise to lower the
jack lift head until the jack ts under the vehicle.
5. Raise the jack until the metal ange ts rmly into
the channel of the jack head.
6. Put the spare tire near you.7. Raise the vehicle by turning the jack handle
clockwise. Raise the vehicle far enough off the
ground for the spare tire to t under the vehicle.
5-77

8. Remove all 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 needed, to get
all the rust or dirt off.9. Remove any rust or dirt
from the wheel bolts,
mounting surfaces, and
spare wheel.
10. Place the spare tire on the wheel-mounting surface.
5-78

{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. 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 turning the jack handle
counterclockwise. Lower the jack completely.
5-79

{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 5-101for 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 5-101for the wheel nut
torque specication.13. Tighten the wheel nuts rmly in a crisscross
sequence as shown.
If your vehicle is equipped with wheel nut covers,
screw the nut covers on with your ngers, then
tighten one-quarter turn with the wheel wrench.
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, if equipped. It will not t. Store the wheel cover
and lug nut caps in the trunk until you have the at tire
repaired or replaced.5-Wheel Nuts
8-Wheel Nuts
5-80

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 spare tire on your vehicle, you
will need to store the at tire in your trunk.
Store the at tire as far forward in the trunk as possible.
Store the jack and wheel wrench in their compartment
in the trunk. For storage, the jack must be raised
until the screw end is ush with the edge of the jack.
The compact spare is for temporary use only. Replace
the compact spare tire with a full-size tire as soon
as you can.A. Cover
B. Wing Nut
C. Retainer
D. Jack and Wheel WrenchE. Jack Container
F. Spare Tire
G. Bolt
1. Open the trunk. SeeTrunk on page 2-13
2. Reinstall the spare tire (F) with the valve stem up,
and line up the wheel nut hole with the bolt (G) or
wheel center and place on the compartment oor.
5-81

3. Insert the jack container (E) into the spare tire (F).
Then insert the jack and wheel wrench (D) 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.
4. Secure the tire and wheel with the retainer (C) and
then the wing nut (B).
5. Reinstall the compact spare tire cover (A).
Spare Tire
Compact Spare Tire
Your vehicle may have 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, 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), so you can
nish your trip and have the full-size tire repaired or
replaced at your convenience. Of course, it is best
to replace the spare with a full-size tire as soon as
possible. The spare tire will last longer and be in good
shape in case it is needed 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 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.
Spare Tire
Your vehicle may have a spare tire, which, when
new, was fully inated. A spare tire may lose air over
time, so check its ination pressure regularly. See
Ination - Tire Pressure on page 5-56andLoading Your
Vehicle on page 4-31for information regarding proper tire
ination and loading your vehicle. For instructions
on how to remove, install or store a spare tire, see
Removing the Flat Tire and Installing the Spare Tire
on page 5-75.
5-82