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Downloaded from www.Manualslib.com manuals search engine When to Check
Check your tires once a month or more.
Don’t forget your compact spare tire. It should
be at
60 psi (420 Wa).
How to Check
Use a good quality pocket-type gage to check tire
pressure.
You can’t tell if your tires are properly inflated
simply by looking at them. Radial tires may look
properly inflated even when they’re underinflated.
Be sure to put the valve caps back on the valve stems.
They help prevent
le:.& by keeping out dirt and
moisture.
Tire Inspection and Rotation
Tires should be inspected every 6,000 to 8,000 miles
(10 000 to 13 000 km) for any signs of unusual wear.
If unusual wear is present, rotate your tires as soon as
possible and check wheel alignment. Also check for
damaged tires or wheels. See “When It’s Time for
New
Tires” and “Wheel Replacement” later in this section for
more information. The
purpose
of regular rotation is to achieve more
uniform wear for all tires on
the vehicle. The first
rotation
is the most important. See “Scheduled
Maintenance Services”
in the Maintenance Schedule
booklet for scheduled rotation intervals.
When rotating your tires, always use the correct rotation
pattern shown here.
Don’t include the compact spare tire
in your tire rotation.
After the tires have been rotated, adjust the front and
rear
inflation pressures as shown on the Tire-Loading
Information label. Make certain that all wheel nuts
are properly tightened. See ”Wheel Nut Torque” in
the Index.
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Downloaded from www.Manualslib.com manuals search engine I A CAUTION:
I
Rust or dirt on a wheel, or on the parts to which
it is fastened, can make 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 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. (See
“Changing
a Flat Tire” in the Index.)
,
When It’s Time for New Tires
One way to tell when it’s
time for new tires is to check the treadwear
indicators, which
will
appear whenb’,your tires have
only
1/16 inch (1.6 mm) or
less of tread remaining.
You need a new tire if any of the following statements
are true:
You can see the indicators at three or more places
around the tire.
You can see cord or fabric showing through the tire’s
rubber.
The tread or sidewall is cracked, cut or snagged deep enough to show cord or fabric.
The tire has a bump, bulge or split.
The tire has a puncture, cut or other damage that can’t be repaired well because of the size or location
of the damage.
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Page 299 of 354

Downloaded from www.Manualslib.com manuals search engine To find out what kind and size of tires you need, look at
the Tire-Loading Information label.
The tires installed on your vehicle when it
was new had
a Tire Performance Criteria Specification (TPC Spec)
number on each tire’s sidewall. When
you get new tires,
get ones with that same TPC Spec number. That way
your vehicle will continue to have tires that are designed
to give proper endurance, handling, speed rating,
traction, ride and other things during normal service on
your vehicle. If your tires have an all-season tread
design, the TPC number will be followed by an
“MS”
(for mud and snow).
If you ever replace your tires with those not having a
TPC Spec number, make sure they are the same size,
load range,
speed rating and construction type (bias,
bias-belted or radial) as your original tires.
Mixing tires could cause you to lose control while
driving.
If you mix tires of different sizes or types
(radial and bias-belted tires), the vehicle may not
handle properly, and you could have
a crash.
Using tires of different sizes may also cause
damage to your vehicle. Be sure
to use the same
size and type tires on all four wheels.
It’s
all right to drive with your compact spare,
though.
It was developed for use on your vehicle.
Page 300 of 354

Downloaded from www.Manualslib.com manuals search engine Uniform Tire Quality Grading
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 specified government test course. For
example, a tire graded 150 would wear one and a half
(1 1/2) 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 significantly fi-om the norm due to variations
in driving habits, service practices and differences in
road characteristics and climate.
Traction -- A, B, C
The traction grades, from highest to lowest, are A, B
and C, and they represent the tire’s ability to stop on
wet pavement as measured under controlled conditions
on specified 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 braking (straightahead) traction tests and does not
include cornering (turning) traction.
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Downloaded from www.Manualslib.com manuals search engine pttraturt: -
The temperature grades are A (the highest), B and C,
representing the tire's resistance to the generation of
heat and its ability to dissipate heat when t.ested under
controlled conditions on a specified indoor laboratory
test wheel. Sustained high temperature can cause the
material
of the tire to degenerate and reduce tire life, and
excessive temperature can lead
to sudden tire failure.
The grade
C corresponds to a level of performance
which all passenger car tires must meet under the
Federal Motor Vehicle Safety Standard
No. 109. Grades
A and B represent higher levels of perfolmance on the
laboratory test wheel than the minimum required by law.
Warning: The temperature grade for
this tire is
established for a tire that is properly inflated and not
overloaded. Excessive speed, underinflation, or
excessive loading, either separately or
in combination,
can cause heat buildup and possible tire failure.
I'ire Bala.--
The wheels on your vehicle were aligned and balanced
carefully at the factory to give you the longest tire life
and best overall performance. In
most cases, you will not need to have your wheels
aligned again. However,
if you notice unusual tire wear
or your vehicle pulling one way or the other, the
alignment may need to be reset. If you notice your
vehicle vibrating when driving on a smooth road, your
wheels may need to be rebalanced.
11 c
Replace any wheel that is bent, cracked, or badly rusted
or corroded.
If wheel nuts keep coming loose, the wheel,
wheel bolts and wheel nuts should be replaced. If the
wheel leaks air, replace
it (except some aluminum
wheels, which can sometimes be repaired). See your
Cadillac dealer if any of these conditions exist.
Your dealer will know the kind
of wheel you need.
Each new wheel should have the same load carrying
capacity, diameter, width, offset and be mounted the
same way as the one it replaces.
If you need to replace any of your wheels, wheel bolts
or wheel nuts, replace them only
with new GM original
equipment parts. This way, you will
be sure to have the
right wheel, wheel bolts and wheel nuts for your
Cadillac model.
Page 302 of 354
Downloaded from www.Manualslib.com manuals search engine -
Using the wrong replacement wheels, wheel bolts
or wheel nuts on your vehicle can be dangerous.
It could affect the braking and handling of your
vehicle, make your tires lose air and make you
lose control.
You could have a collision in which
you or others could be injured. Always use the
correct wheel, wheel bolts and wheel nuts for
replacement.
NOTICE:
The wrong wheel can also cause problems with
bearing life, brake cooling, speedometer/odometer
calibration, headlamp aim, bumper height, vehicle
ground clearance and tire or tire chain clearance to
the body and chassis.
See “Changing a Flat Tire” in the Index for more
information.
Used Replacement Wheels
-
CAUTION:
Putting a used wheel on your vehicle is
dangerous. You can’t know how it’s been used
or how many miles it’s been driven. It could fail
suddenly and cause an accident.
If you have to
replace a wheel, use
a new GM original
equipment wheel.
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Downloaded from www.Manualslib.com manuals search engine Tire Chains
NOTICE:
Use tire chains only where legal and only when
you must. Use only
SAE Class “S” type chains
that are the proper size for your tires. Install
them on the front tires and tighten them
as
tightly as possible with the ends securely
fastened. Drive slowly and follow the chain
manufacturer’s instructions.
If you can hear the
chains contacting your vehicle, stop and retighten
them.
If the contact continues, slow down until it
stops. Driving too fast or spinning the wheels
with chains on will damage your vehicle.
Appearance Care
Remember, cleaning products can be hazardous. Some
are toxic. Others can burst into flames
if you strike a
match or get them on
a hot part of the vehicle. Some are
dangerous
if you breathe their fumes in a closed space.
When you use anything from
a container to clean your
Cadillac, be sure to follow
the manufxturer’s warnings and
instructions. And always open your doors
or
windows when you’re cleaning the inside.
Never use these to clean your vehicle:
Gasoline
0 Benzene
Naphtha
0 Carbon Tetrachloride
0 Acetone
Paint Thinner
Turpentine
Lacquer Thinner
0 Nail Polish Remover
They can
all be hazardous -- some more than
others
-- and they can all damage your vehicle too.
Don’t use any
of these unless this manual says you can.
In many uses, these will damage
your vehicle:
Alcohol
0 Laundry Soap
0 Bleach
Reducing Agents
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Downloaded from www.Manualslib.com manuals search engine Cleaning the Inside of Your Cadillac
Use a vacuum cleaner often to get rid of dust and loose
dirt. Wipe vinyl or leather with a clean, damp cloth.
Your Cadillac dealer has two GM cleaners, a
solvent-type spot lifter and a foam-type powdered
cleaner. They will clean normal spots and stains very
well. Do not use them on vinyl or leather.
Here
are some cleaning tips:
0
0
0
0
0
Always read the instructions on the cleaner label.
Clean up stains as soon as you can
-- before they set.
Use a clean cloth or sponge, and change to a clean
area often.
A soft brush may be used if stains are
stubborn.
Use solvent-type cleaners in a well-ventilated area
only.
If you use them, don’t saturate the stained area.
If a ring forms after spot cleaning, clean the entire
area immediately
or it will set.
Using Foam-Type Cleaner on Fabric
0
0
0
0
0
0
0
0
0
0
0
Vacuum and brush the area to remove any loose dirt.
Always clean a whole trim panel or section. Mask
surrounding trim along stitch or welt lines.
Mix Multi-Purpose Powdered Cleaner following the directions on the container label.
Use suds only and apply with a clean sponge.
Don’t saturate the material.
Don’t rub it roughly.
As soon as you’ve cleaned the section, use a sponge
to remove the suds.
Rinse the section with a clean, wet sponge.
Wipe
off what’s left with a slightly damp paper towel
or cloth.
Then dry
it immediately with a blow dryer.
Wipe with a clean cloth.
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