wheel GMC SIERRA 1993 Workshop Manual

Your Driving and the Road
Power Winches
i !
If you wish to use a power winch on your vehicle, only use it \
when your
vehicle is stationary or anchored.
i
NOTICE
Use the regular brakes, set the parking brake or block the wh\
eels to keep
your vehicle from rolling.
Power rake-off (PTO)
Before using a power take-off, refer to the manufacturer’s or installer’s
instructions.
To engage a power take-off:
1. Set ths parking brake.
2. Shift the transmission into N (Neutral).
3. Hold the clutch pedal down and engage the power take-off.
*
If you are going to drive the vehicle, shift the transmission int\
o the gear
you want. Then shift the transfer case into the range you wan\
t
(if you
have four-wheel-drive), apply the regular brakes and release th\
e parking
brake.
When you release the clutch, the power take-off will start.
4. Release the clutch (and the regular brakes) as you normally \
would.
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Pmbkms on the Road
not be able to get enough power from a single battery in another vehicle
to start your diesel engine.
If your vehicle has more than one battery, use the battery that’\
s closest
to the starter-this will reduce electrical resistance.
2. Get the vehicles close enough so the jumper cables can reach, but be
sure the vehicles aren’t touching each other.
If they are, it could cause a
ground connection you don’t want. You wouldn’t be able
to start your
vehicle, and the bad grounding could damage the electrical syst\
ems.
You could be injured
if the vehicles roll. Set the parking brake firmly
manual transmission in
N (Neutral).
If you have a four-wheel-drive vehicle, be sure the transfer c\
ase is
not in
N (Neutral).
1 on each vehicle. Put an automatic transmission in P (Park) or a
3. Turn off the ignition on both vehicles. Turn off all lights that aren’t need-
ed, and radios. This will avoid sparks and help save both bat\
teries. And
it could save your radio!
ou leave your radio on, it could be badly damaged. The repairs
r.,Jldn’t be covered by your warranty. I
4. Open the hoods and locate the batteries.
Find the positive
(t) and negative (-) terminals on each battery.
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Problenrs on the Road
Towing Your Vehicle
Try to have a GM dealer or a professional towing service tow your vehicle.
They can provide the right equipment and know how to tow it without dam-
age.
If your vehicle has been changed since it was factory-new, by adding things
like fog lamps, aero skirting, or special tires and wheels, th\
ese things could
be damaged during towing.
Before you do anything, turn on the hazard warning flashers.
When you call, tell the towing service:
That your vehicle has rear-wheel drive, or that it has the four-wheel drive
option.
The make, model, and year of your vehicle.
Whether you can move the shift lever for the transmission and \
transfer case,
if you have one.
If there was an accident, what was damaged.
I A To help avoid injury to you or others:
Never let passengers ride in a vehicle that is being towed.
Never tow faster than safe or posted speeds.
Never tow with damaged parts not fully secured.
Never get under your vehicle after it has been lifted by the tow
truck.
Always use separate safety chains on each side when towing a
vehicle.
When your vehicle is being towed, have the ignition key
off. The steering
wheel should be clamped in a straight-ahead position, with a clamping device
designed for towing service.
Do not use the vehicle’s steering column lock for
this. The transmission and transfer case,
if you have one, should be in Neu-
tral and the parking brake released.
If you have a two-wheel drive vehicle, don’t have your vehicle \
towed on the
rear wheels, unless you must. If the vehicle must be towed on\
the rear
wheels, don’t go more than
35 mph (56 km/h) or farther than 50 miles (80
krn) or your transmission will be damaged. If these limits must be exceeded,
then the rear drive wheels have to be supported on a dolly.
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If your vehicle has the four-wheel-drive option and the transfer c\
ase is
engaged, a dolly must be used under the rear wheels when towi\
ng from the
front.
Engine Overheating
You will find a coolant temperature gage on your vehicle instrument\
panel. If
you have a diesel engine, you will also find a low coolant light on your
instrument panel.
If Steam Is Coming From Your Engine:
K2509
I CAUTION
A
Steam from an overheated engine can burn you badly, even if you
just open the hood. Stay away from the engine
if you see or hear
steam coming from it. Just turn
it off and get everyone away from
the vehicle until
it cools down. Wait until there is no sign of steam
or coolant before opening the hood.
If you keep driving when your engine is overheated, the liquids in it
can catch fire. You or others could be badly burned. Stop your
engine
if it overheats, and get out of the vehicle until the engine is
cool.
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Engine Fan Noise
This vehicle has a clutched engine cooling fan. When the clutch 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 fue\
l economy and
reduces fan noise. Under heavy vehicle loading, trailer towing andlor 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 should 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 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 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 driv\
ing slowly to a
level place. Turn on your hazard warning flashers.
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JACKING TOOL STORAGE
(TWO AND
FOUR
DOOR MODELS)
TOOL
NUT
-* RETAINER
&# EXTENSION
WRENCH
JACK
& TOOL
JACKING TOOL STORAGE
WHEEL
JACKING (CHASSIS
WRENCH
RATCHET
I UUL s I UHAUt
CAB MODELS) JACK JACK
& TOOL
COVER
EXTENSION
TOOL RETAINER
JACK
& TOOL
STORAGE BOX
PB008
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Problenrs on the Road
Jack Storage
Your jack and wheel ratchet are behind the passenger seat. Turn. th\
e wing
nut counterclockwise and remove the cover
if there is one.
Spare Tire
-
i
K2517
Your spare tire is either underneath the rear of the vehicle, or mounted to the
inside of the bed on the driver’s side.
If you have a chassis cab, refer to the
information from the body supplier/installer.
The spare tire
is a full size tire, like the other tires’ on your vehicle.
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Problems on the Road
"I
K2536
Attach the ratchet, with the DOWN marking facing you, to the wheel wrench.
Put the chisel end
of the wheel wrench on an angle through the hole in the
rear bumper. Be sure the wheel wrench connects into the hoist shaft.
Turn the ratchet to the left to lower the spare tire. Keep turning the ratchet
until the spare tire can be pulled out from under the vehicle\
.
K2537
When the tire has been lowered, tilt the retainer at the end of the cable and
pull
it through the wheel opening.
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A
T
..
LL
'2
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 fo\
llowing things.
Put your spare tire near the flat tire.
Remove the wheel trim.
K2367
If there is a wheel cover, remove it by using the flat end of the wheel
wrench.
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 wheel wrench\
.
Use the wheel wrench and 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 wheel
wrench.
K2368
If the wheel has a smooth center piece or a center piece with r\
ecessed
nuts, remove
it using the flat end of the wheel wrench. Place the flat end
of the wheel wrench in the
slot on the wheel and pry out gently.
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