1999 CHEVROLET SUBURBAN Owners Manual

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5-23
If your Suburban has a jack cover, lift the tab up to
release the cover, then take it off.
To take the jack out, turn the wing nut counterclockwise
and take it and the retainer off. Take the jack and storage
box out and take the tools out of the box.
Your vehicle may have a pair of emergency gloves
secured to the jack. You can use them when changing
the tire, or during other emergency situations.
Remember to replace them with the jack, so you will
have them if needed later.The tools you'll be using include the jack (A), the jack
handle extension (B), jack handle (C), wheel wrench (D)
and the ratchet (E).
The jack handle extension is used if the flat tire is on the
rear of the vehicle.

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Attach the jack handle (and jack handle extension, if
needed) to the jack.
UP Marking DOWN Marking
One side of the ratchet has an UP marking. The other
side has a DOWN marking.

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5-25
With the UP marking on the ratchet facing you, rotate
the ratchet clockwise. That will lift the jack head a little.
If your vehicle has wheel
nut caps, use the wheel
wrench and ratchet to
remove them. Turn
the wheel wrench
counterclockwise, with
DOWN facing you, to
remove the wheel nut caps.
Then take off the hub cap.
If the wheel also has a trim ring, use the wheel wrench
to pry along the edge and remove it.
If the wheel has a smooth center piece, place the wheel
wrench in the slot on the wheel and gently pry it off.

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5-26 Removing the Flat Tire and Installing the
Spare Tire
1. Use the ratchet and
wheel wrench to loosen
all the wheel nuts. Turn
the wheel wrench
counterclockwise, with
DOWN facing you, to
loosen the wheel nuts.
Don't remove the wheel
nuts yet.
2. If the flat tire is on the rear of the vehicle, put the
jack handle extension on the jack handle.
3. Position the jack under the vehicle. If the flat tire is
on the front of the vehicle, position the jack on the
frame behind the flat tire. If the flat tire is on the rear
of the vehicle, position the jack on the axle near the
flat tire between the spring and the shock absorber.

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5-27
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.
Front Position Rear Position
4. With UP on the ratchet facing you, raise the vehicle
by rotating the ratchet and wheel wrench clockwise.
Raise the vehicle far enough off the ground so there
is enough room for the spare tire to fit.

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5-28
5. Remove all the wheel
nuts and take off the
flat tire.
6. 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.
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.

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5-29
7. Replace the wheel
nuts with the
rounded end of the
nuts toward the
wheel. Tighten
each wheel nut by
hand using the
wheel wrench until
the wheel is held
against the hub.
Front Position Rear Position8. Lower the vehicle by rotating the ratchet and
wheel wrench counterclockwise. Lower the
jack completely.
9. Tighten each
wheel nut by
rotating the wheel
wrench clockwise.

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10. Tighten the nuts firmly in a crisscross sequence as
shown. Rotate the wheel wrench clockwise.
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 the
proper torque. For proper torque, see
ªCapacities and Specificationsº in the Index.