1993 CHEVROLET SUBURBAN wheel

Engine Fan Noise
This vehicle has a clutched engine cooling fan. When the clutc\
h is engaged,
the fan spins faster
to provide more air to cool the engine. In most every day
driving conditions the clutch is not engaged. This improves fuel economy and
reduces fan noise. Under heavy vehicle loading, trailer towing \
and/or high
outside temperatures, the fan speed increases when the clutch e\
ngages.
So
you may hear an increase in fan noise. This is normal and sh\
ould not be
mistaken
as the transmission slipping or making extra shifts. It is merely the
cooling system functioning properly. The fan
will slow down when additional
cooling is not required and the clutch disengages.
You may also hear this fan noise when you start the engine. \
It will go away
as the fan clutch disengages.
If a Tire Goes Fiat
It’s unusual for a tire to “blow out” 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 “blowout,” 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, 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 co\
ntrol 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 your tire goes flat, the next part shows how to use your jacking equipment
to change a flat tire safely.
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.
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Changing a tire can cause an injury. The vehicle can slip off the jack
injured. Find a level place to change your tire. To help prevent the
vehicle
from moving:
- and roll over you or other people. You and they could be badly
1. Set the parking brake firmly.
2. Put the shift lever in P (Park).
3. Shift a manual transmission to 1 (First) or R (Reverse).
4. If you have a four-wheel-drive vehicle, be sure the transfer case \
5. Turn off the engine.
is in a drive gear-not in N (Neutral).
To be even more certain the vehicle won't move, you can put chocks
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.
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L
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The following steps will tell you how to use the jack and change a tire.
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1
K2521
Attach the jack handle (and jack handle extensions, if needed) to the jack.
With the
UP marking on the ratchet facing you, rotate the ratchet clockwise.
That
will lift the jack head a little. Before raising the vehicle, do the following
things.
Put
your spare tire near the flat tire.
Remove the wheel trim.
1 K2367
If there is a wheel cover, remove it by using the flat end of the socket. Pry
along the edge
of the wheel cover until it comes off. Be careful; the rim
edges may be sharp. Don't try to remove
it with your bare hands.
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K2369
If your vehicle has wheel nut caps, remove them using the ratchet and
socket. Use the ratchet with
DOWN facing you to unscrew and take them off.
Then take the hub cap off.
If the wheel has a trim ring, remove it by using the flat end of the socket.
K2368
If the wheel has a smooth center piece or a center piece with recessed nuts,
remove it using the flat end of the socket. Place the flat end of the socket in
the slot on the wheel and
pry out gently.
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PO205
Using the socket and ratchet, with DOWN facing you, loosen all the wheel
nuts. Don’t remove them yet.
I JACK LOCATIONS/ALL MODELS
K2120
CAUTION
I A Getting under a vehicle when it is jacked up is dangerous. If the I
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. I
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K2527
qemove all the wheel nuts and take off the flat tire.
1
K2529
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1 CAUTION
* Rust or dirt on the wheel, or on the parts to which it is fastened, ’
h can make the wheel nuts become loose after a time. The wheel
I could corne off and cause an accident. When you change a wheel,
remove any rust or dirt fmm 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 ~r wire brush later, if you
need to, to get all the rust or dirt off.
Remove any rust or dirt from the wheel bolts, mounting surfaces or spare
wheel. Place the spare on the wheel mounting
surface.
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.
I
K2127
Replace the wheel nuts with the rounded end of the nuts toward the wheel.
Tighten each wheel
nut by hand until the wheel is held against the hub.
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CAUTION I
Incorrect wheel nuts or improperly tightened wheel nuts can cau\
se
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 the right kind.
Stop somewhere as soon as you can and have the nuts tightened
with a torque wrench
to the promr toraue. I
For proper torque, see “Wheel Nut Torque” in the Index.
Put the wheel trim back on. For vehicles with plastic nut cap\
s, tighten the
caps until they are finger tight, then tighten them an additio\
nal one-half turn
with the ratchet. Remove any wheel blocks.
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.
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