1999 Oldsmobile Silhouette flat tire

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5-24 Removing the Flat Tire and Installing the
Spare Tire
1. If your vehicle has
aluminum wheels, use
the handle of the folding
wrench to pry the large
center cap off.
Then, with the other end of the folding wrench,
loosen the nuts.
If your vehicle has the plastic ªbolt-onº wheel
covers, loosen them completely using the folding
wrench, and remove the wheel cover.

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5-26
3. Near each wheel, there
is a notch in the
vehicle's body. Position
the jack and raise the
jack head until it fits
firmly into the notch in
the vehicle's frame
nearest the flat tire.
NOTICE:
Do not place the jack under the rear axle control
arms. Only use the areas shown for proper
jack location.
Do not raise the vehicle yet. Put the compact spare
tire near you.
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 fit the jack lift head
into the proper location before raising
the vehicle.

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5-27
4. Attach the folding
wrench to the jack, and
turn the wrench
clockwise to raise the
jack head a few inches.
5. Raise the vehicle by turning the folding wrench
clockwise in the jack. Raise the vehicle far enough
off the ground so there is enough room for the spare
tire to fit.
6. Remove all the wheel nuts and take off the flat tire.7. Remove any rust or dirt
from the wheel bolts,
mounting surfaces and
spare wheel.
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.

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5-29
10. Tighten the wheel nuts
firmly in a crisscross
sequence, as shown.
CAUTION:
Incorrect wheel nuts or improperly tightened
wheel nuts can cause the wheel to become 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 original
equipment wheel nuts.
Stop somewhere as soon as you can and have
the nuts tightened with a torque wrench to
100 lb
-ft (140 N´m).
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 specification.
Don't try to put a wheel cover on the compact spare tire.
It won't fit. Store the wheel cover securely in the rear of
the vehicle until you have the flat tire repaired
or replaced.
NOTICE:
Wheel covers won't fit on your compact spare.
If you try to put a wheel cover on your compact
spare, you could damage the cover or the spare.

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5-30 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.
1. Lay the tire near the rear of the vehicle with the
valve stem down.
2. Remove the small center cap by tapping the back of
the cap with the extension of the shaft.
3. Slide the cable retainer through the center of the
wheel and start to raise the tire.
Make sure the retainer is fully seated across the
underside of the wheel.4. When the tire is almost in the stored position, turn
the tire so the valve is towards the rear of
the vehicle.
This will help when you check and maintain tire
pressure in the spare.
5. Keep raising the wheel until you hear the hoist
mechanism click twice.
This means the wheel is firmly stored against the
underside of the vehicle.
6. Push against the wheel to be sure it does not move
and is stored securely.
7. Replace all jacking tools as they were stored in the
jack storage compartment and replace the
compartment cover.
To replace the cover, line up the tabs on the right of
the cover with the slots in the cover opening. Push
the cover in place and push down the tab so that it
rests in the groove. This secures the cover in place.

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5-31
A. Strap
B. Bag and ToolsC. Jack
Unless you have the plastic ªbolt
-onº wheel covers, be
sure to also store the center cap. When you replace the
compact spare with a full
-size tire, replace the bolt-on
wheel covers and the center cap. Tighten them ªhand
tightº over the wheel nuts, using the folding wrench.
Compact Spare Tire
Although the compact spare tire was fully inflated
when your vehicle was new, it can lose air after a time.
Check the inflation 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 inflated. 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 finish your trip and have your full
-size tire
repaired or replaced where you want. Of course, it's 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.

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6-39
Tires
Your new vehicle comes with high-quality tires made by
a leading tire manufacturer. If you ever have questions
about your tire warranty and where to obtain service, see
your Oldsmobile Warranty booklet for details.
CAUTION:
Poorly maintained and improperly used tires
are dangerous.

Overloading your tires can cause
overheating as a result of too much friction.
You could have an air
-out and a serious
accident. See ªLoading Your Vehicleº in
the Index.
CAUTION: (Continued)
CAUTION: (Continued)

Underinflated tires pose the same danger as
overloaded tires. The resulting accident
could cause serious injury. Check all tires
frequently to maintain the recommended
pressure. Tire pressure should be checked
when your tires are cold.

Overinflated tires are more likely to be
cut, punctured or broken by a sudden
impact
-- such as when you hit a pothole.
Keep tires at the recommended pressure.

Worn, old tires can cause accidents. If your
tread is badly worn, or if your tires have
been damaged, replace them.

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6-40 Inflation -- Tire Pressure
The Certification/Tire label, which is on the rear edge of
the driver's door, shows the correct inflation pressures
for your tires when they're cold. ªColdº means your
vehicle has been sitting for at least three hours or driven
no more than 1 mile (1.6 km).
NOTICE:
Don't let anyone tell you that underinflation or
overinflation is all right. It's not. If your tires
don't have enough air (underinflation), you can
get the following:

Too much flexing

Too much heat

Tire overloading

Bad wear

Bad handling

Bad fuel economy.
NOTICE: (Continued)
NOTICE: (Continued)
If your tires have too much air (overinflation),
you can get the following:

Unusual wear

Bad handling

Rough ride

Needless damage from road hazards.
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 kPa).
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 leaks by keeping out dirt
and moisture.