wheel CADILLAC DTS PROFESSIONAL 2007 1.G Manual Online

Removing the Flat Tire and
Installing the Spare Tire
1. Do a safety check before proceeding. See
Changing a Flat Tire on page 428for more
information.
2. 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. Store the wheel cover and lug nutcaps in the trunk until you have the at tire
repaired or replaced. 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.
3. For models with exposed lug nuts, loosen
them using the wheel wrench. Do not
remove them yet.
431

4. 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.
432

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 jack handle counterclockwise to
lower the jack lift head until the jack ts
under the vehicle.
6. Raise the jack until the metal ange ts rmly
into the channel of the jack head.7. Put the spare tire near you.
8. 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.
9. Remove all wheel nuts and the at tire.
433

{CAUTION:
Rust or dirt on the wheel, or on the parts
to which it is fastened, can make the
wheel nuts become loose after time. The
wheel could come off and cause an
accident. When changing a wheel, remove
any rust or dirt from the places where the
wheel attaches to the vehicle. In an
emergency, a cloth or a paper towel can
be used to do this; but be sure to use a
scraper or wire brush later, if needed, to
get all the rust or dirt off.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.
{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
serious accident.
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12. 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.
13. Lower the vehicle by turning the jack handle
counterclockwise. Lower the jack completely.
435

{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. See
Capacities and Specifications on page 460
for 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. See
Capacities and Specifications on page 460for
the wheel nut torque specication.14. 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
vehicle’s compact spare. If you try to put a
wheel cover on the compact spare, the cover or
the spare could be damaged.
5-Wheel Nuts8-Wheel Nuts
436

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,
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.
437

A. Cover
B. Wing Nut
C. Retainer
D. Jack and Wheel
Wrench
E. Jack Container
F. Spare Tire
G. Bolt1. Open the trunk. SeeTrunk on page 106.
2. Reinstall the spare tire (F) making sure to line
up the wheel center hole with the bolt (G) and
place it on the compartment oor.
3. Insert the jack container (E) into the spare
tire (F). Then insert the jack and wheel
wrench (D) into the center of the spare tire
making sure to line up the wheel nut hole with
the bolt (G) on the compartment oor.
4. Secure the spare tire and the jack container
with the retainer (C) and then the wing
nut (B).
5. Reinstall the 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).
438

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. SeeInation - Tire Pressure on
page 411andLoading Your Vehicle on page 333
for 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 431.
After installing the spare tire on your vehicle, you
should stop as soon as possible and make
sure the spare is correctly inated. Have the
damaged or at road tire repaired or replaced as
soon as you can and installed back onto your
vehicle. This way, a spare tire will be available in
case you need it again.
Your vehicle may have a different size spare tire
than the road tire originally installed on your
vehicle. This spare tire was developed for use on
your vehicle, so it is all right to drive on it.
If your vehicle has a spare tire that does not
match your vehicle’s original road tires and wheels
in size and type, do not include the spare in the
tire rotation.
439

Aluminum or Chrome-Plated Wheels
and Trim
Your vehicle may have either aluminum or
chrome-plated wheels.
Keep the wheels clean using a soft clean cloth
with mild soap and water. Rinse with clean water.
After rinsing thoroughly, dry with a soft clean
towel. A wax may then be applied.
Notice:Chrome wheels and other chrome trim
may be damaged if you do not wash your
vehicle after driving on roads that have been
sprayed with magnesium, calcium or sodium
chloride. These chlorides are used on roads for
conditions such as ice and dust. Always
wash your vehicle’s chrome with soap and
water after exposure.
Notice:If you use strong soaps, chemicals,
abrasive polishes, cleaners, brushes, or
cleaners that contain acid on aluminum or
chrome-plated wheels, you could damage the
surface of the wheel(s). The repairs would
not be covered by your warranty. Use
only approved cleaners on aluminum or
chrome-plated wheels.The surface of these wheels is similar to the
painted surface of your vehicle. Do not use strong
soaps, chemicals, abrasive polishes, abrasive
cleaners, cleaners with acid, or abrasive cleaning
brushes on them because you could damage
the surface. Do not use chrome polish on
aluminum wheels.
Notice:Using chrome polish on aluminum
wheels could damage the wheels. The repairs
would not be covered by your warranty.
Use chrome polish on chrome wheels only.
Use chrome polish only on chrome-plated wheels,
but avoid any painted surface of the wheel, and
buff off immediately after application.
Notice:If you drive your vehicle through an
automatic car wash that has silicone carbide
tire cleaning brushes, you could damage
the aluminum or chrome-plated wheels. The
repairs would not be covered by your warranty.
Never drive a vehicle equipped with aluminum
or chrome-plated wheels through an
automatic car wash that uses silicone carbide
tire cleaning brushes.
446