1999 CADILLAC DEVILLE Owners Manual

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5-19
Changing a Flat Tire
If a tire goes flat, avoid further tire and wheel damage
by driving slowly to a level place. Turn on your hazard
warning flashers.
CAUTION:
Changing a tire can cause an injury. The vehicle
can slip off the jack and roll over you or other
people. You and they could be badly injured.
Find a level place to change your tire. To help
prevent the vehicle from moving:
1. Put the shift lever in PARK (P).
2. Set the parking brake firmly.
3. Turn off the engine.
To be even more certain the vehicle won't move,
you can 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 of the
vehicle, at the opposite end.
The following steps will tell you how to use the jack and
change a tire.

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5-20 Removing the Spare Tire and Tools
The equipment you'll need is in the trunk. Pull the
carpeting from the floor of the trunk. Turn the retainer
(center dial) on the compact spare cover
counterclockwise to remove it. Lift and remove the
cover. (See ªCompact Spare Tireº in the Index for more
information about the compact spare.)
Lift up the tire to remove it from the trunk.

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5-21
Turn the nut holding the jack and wheel wrench
counterclockwise and remove it. Then remove the jack
and wrench.The tools you'll be using include the jack (A) and the
wheel wrench (B).

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5-22 Removing the Wheel Cover
There is a center wheel cover on the aluminum wheel.
Using the flat end of the wheel wrench, gently pry the
wheel cover off. Be careful not to scratch the aluminum
wheel edge and don't try to remove it with your hands.
Removing the Flat Tire and Installing the
Spare Tire
1. Using the wheel wrench, loosen all the wheel nuts.
Don't remove them yet.

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5-23
2. Find the jacking location from the diagrams above
and corresponding cutouts in the plastic molding.
3. Attach the wheel wrench to the jack. Turn the wheel
wrench counterclockwise to lower the jack lift head
until the jack fits under the car.

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5-24
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.
4. Position the jack under the vehicle and raise the jack
lift head until it fits firmly into the notch in the
vehicle's frame nearest the flat tire.
Put the compact spare tire near you.
5. Raise the vehicle by turning the wheel wrench
clockwise. Raise the vehicle far enough off the
ground so that the flat tire can be removed and the
spare tire will fit on the wheel mounting surfaces.
6. Remove all wheel nuts and take off the flat tire.
7. Remove any rust or dirt
from the wheel bolts,
mounting surfaces and
spare wheel.

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5-25
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.
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.
8. Place the spare on the
wheel
-mounting surface.
9. Replace the wheel nuts
with the rounded end of
the nuts toward the
wheel. Tighten each nut
by hand until the wheel
is held against the hub.

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5-26
10. Lower the vehicle by turning the wheel wrench
counterclockwise. Lower the jack completely.
11. 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 GM 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).