1999 PONTIAC GRAND AM Owners Manual

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5-17
5. Then replace the pressure cap. Be sure the pressure
cap is hand tight.
Check the level in the surge tank when the cooling
system has cooled down. If the coolant isn't at the
proper level, repeat Steps 1 to 3 and reinstall the
pressure cap or see your dealer.
If a Tire Goes Flat
It's unusual for a tire to ªblow outº while you're driving,
especially if you maintain your tires properly. If air goes
out of a tire, it's much more likely to leak out slowly.
But if you should ever have a ªblowout,º here are a few
tips about what to expect and what to do:
If a front tire fails, the flat tire will create a drag that
pulls the vehicle toward that side. Take your foot off the
accelerator pedal and grip the steering wheel firmly.
Steer to maintain lane position, and then gently brake to
a stop well out of the traffic lane.
A rear blowout, particularly on a curve, acts much like a
skid and may require the same correction you'd use in a
skid. In any rear blowout, remove your foot from the
accelerator pedal. Get the vehicle under control by
steering the way you want the vehicle to go. It may be
very bumpy and noisy, but you can still steer. Gently
brake to a stop
-- well off the road if possible.
If a tire goes flat, the next part shows how to use your
jacking equipment to change a flat tire safely.

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5-18
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. Set the parking brake firmly.
2. Put the shift lever in PARK (P).
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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5-19 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 center
retainer nut on the compact
spare cover counterclockwise
to remove it.
Lift and remove the cover. See ªCompact Spare Tireº
later in this section for more information about the
compact spare.
Turn the wing nut
counterclockwise and remove
it. Then lift off the spacer
and remove the spare tire.
Remove the jack and wheel wrench from the trunk.
Your vehicle's jack and wheel wrench are stored in a
foam tray. Remove the band around the jack.

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5-20
The tools you'll be using include the jack (A) and wheel
wrench (B).
Removing the Flat Tire and Installing the
Spare Tire
1. Remove the wheel nut caps (you may need to use the
wheel wrench to loosen and remove them, if your
fingers do not fit into this small area).
2. Then use the wheel wrench to loosen all the wheel
nuts. Don't remove them yet.

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5-21
3. Position the jack and raise the jack head until it fits
firmly into the notch in the vehicle's frame nearest
the flat tire. 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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5-22
4. Raise the vehicle by rotating the wheel wrench
clockwise. Raise the vehicle far enough off the ground
so there is enough room for the spare tire to fit.
5. Remove all of the wheel nuts.
6. Remove the flat tire.
7. Remove any rust or dirt
from the wheel bolts,
mounting surfaces and
spare wheel.

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5-23
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. Replace the wheel and
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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5-24
9. Lower the vehicle by rotating the wheel wrench
counterclockwise. Lower the jack completely.
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).