wheel CHEVROLET TRACKER 1994 Owner's Manual

loss of Control
Let's review what driving experts say
about
what happens when the three
control system (brakes, steering and
acceleration) don't have enough friction
where
the tires meet the road to do what
the driver has asked.
In any emergency. don't give up. Keep
trying
to steer and constantly seek an
escape route or area
of less danger.
Skidding
In a skid. a driver can lose control of the
vehicle. Defensive drivers avoid most
skids by taking reasonable care suited
to
existing conditions. and by not
"overdriving" those conditions. But skids
are always possible.
The three types
of skids correspond to
your Geo's three control systems. In the
braking skid your wheels are.n't rolling.
In
the steering or cornering skid, too much
speed or steering
in a curve causes tires to
slip and lose cornering force. And
in the
acceleration skid too much throttle causes
the driving wheels
to spin.
A cornering skid and an acceleration skid
are best handled by easing your foot off
the accelerator pedal.
If your vehicle starts to slide, ease your
foot 011' the accelerator pedal and quickly
steer the way
you want the vehicle to go.
If you start steering quickly enough. your
vehicle
may straighten out. 41ways be
ready for
;I sccond skid if it occurs.
Of course, traction is reduced when water,
snow. ice. gravel. or other material is on
the road. For safety, you'll want to slow
down and adjust your driving
to these
conditions.
It is important to slow down
on slippery surfaces because stopping
distance will be longer
and vehicle
control more limited.
While driving on
a surface with reduced
traction.
try your best to avoid sudden
steering, acceleration,
or braking
(including engine braking by shifting
EO a
lower gear).
Any sudden changes could
cause the tires to slide. You may
not
realize the surface is slippery until yout-
vehicle is skidding. Learn
to recognize
warning clues
~ such as enough water,
ice or packed snow
on the road to make ;1
"nlir~-or.ed surf'rlce" - and slow down
when you have any doubt.
Remember: The rex-wheel anti-lock
braking system (RWAL) helps avoid
only
a rear braking skid. In a braking skid
(where the front wheels are
no longer rolling),
release enough pressure
on the
brakes to get the front wheels rolling
again. This restores steering control. Push
the brake pedal down steadily when you
have
to stop suddenly. As long as the
I'ront wheels are rolling,
you will have
sleering control.
Driving Guidelines
This multipurpose passenger vehicle is
defined as a utility vehicle in Consumer
Information Regulations issued
by the
National I-lighway Traffic Safety
Administration (NHTSA)
of the United
States Department of Transportation.
Utility vehicles have higher ground
clearance and a narrower track to make
them capable of performing
in a wide
variety
of off-road applications. Specific
design characteristics give them a higher
center of gravity than ordinary cars. An
advantage
of the higher ground clearance
is
a better view of the road allowing you
to anticipate problems. They are not
designed for cornering
at the same speeds
as conventional 2-wheel drive vehicles
any no re than low-slunl 7 .'p '-, orts cars are
designed
to perform satisfitctorily under
off-road conditions.
If at all possible,
avoid shurp turns or abrupt maneuvers.
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Your Driving and the Road
As with other vehicles of this type, failure
to operate this vehicle correctly may
result
in loss of control or vehicle
rollover.
Off-Road Driving with
Your Geo Four-wheel
Drive Vehicle
This off-road guide is for vehicles that
have four-wheel drive.
Also, see “Anti-lock Brakes”
in the Index.
If your vehicle doesn’t have four-wheel
drive, you shouldn’t drive off-road unless
you’re
on a level, solid surface.
Off-road driving can be great fun. But
it
does have some definite hazards. The
greatest of these is the terrain itself.
“Off-roading” means
you’ve left the great
North American road system behind.
Traffic lanes aren‘t marked. Curves aren’t
banked. There are no road signs. Surfwes
can be slippery, rough, uphill
or downhill.
In short, you’ve gone right back to nature.
Off-road driving involves
some new
skills. And that’s
why it’s very important
that
you read this guide. You’ll find many
driving tips and suggestions. These
will
help make your off-road driving safer and
more enjoyable.
=. .lo8
Before You Go Off-Roading
There are some things to do before you
go out. For example, be sure to have all
necessary maintenance and service work
done. Be sure you read all the information
about your four-wheel drive vehicle in
this manual. Is there enough fuel? Is the
spare tire
fully inflated‘? Are the fluid
levels up where they should
be‘? What are
the local laws
that apply to off-roacting
where you’ll be driving?
If you don’t
know, you should check with law
enforcement people
in the area. Will you
be on someone’s private land?
If so, be
sure
to get the necessary permission.
Loading Your Vehicle for Off-Road
Driving
There are some important things to
remember
about how to load your
vehicle. The heavies1 things should
be on the
load floor and forward of your rear
axle. Put heavier items
as far forward
as you can.
e Be sure the load is secured properly,
so driving on the off-road terrain
doesn’t
toss things around.
You’ll find other important information in
this manual. See “Vehicle Loading” and
”Tires”
in the Index.
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Traveling to Remote Areas
It makes sense to plan your trip,
especially when going to a remote area.
Know the terrain and plan your route. You
are much less likely to get bad surprises.
Get accurate maps of trails and terrain.
Try to learn of any blocked or closed
roads.
It’s also a good idea to travel with at least
one other vehicle.
If something happens
to one of them, the other can help quickly.
Does your vehicle have a winch? If
so, be
sure to read the winch instructions. In a
remote area, a winch can be handy if you
get stuck. But you’ll want to know how to
use it properly.
Getting Familiar with Off-Road
Driving
It’s a good idea to practice in an area
that’s safe and close to home before you
go into the wilderness. Off-road driving
does require some new and different
driving skills. Here’s what we mean.
Tune your senses to different kinds of
signals. Your eyes, for example, need to
constantly sweep the terrain for
unexpected obstacles. Your ears need to
listen for unusual tire or engine sounds. With
your arms, hands, feet, and body
you’ll need to respond to vibrations and
vehicle bounce.
Controlling your vehicle is the key to
successful off-road driving. One
of the
best ways to control your vehicle is to
control your speed. Here are some things
to keep in mind. At higher speeds:
0 you approach things faster and you
have less time to scan the terrain for
obstacles.
0 you have less time to react.
0 you have more vehicle bounce when
you drive over obstacles.
0 you’ll need more distance for braking,
especially since you’re on an unpaved
surface.
Scanning the Terrain
Off-road driving can take you over many
different kinds of terrain. You need to be
familiar with the terrain and its many
different features. Here are some things to
consider.
Surface Conditions. Off-roading can
take you over hard-packed dirt, gravel,
rocks, grass, sand, mud, snow or ice.
Each of these surfaces affects the steering,
acceleration, and braking of your vehicle
in different ways. Depending upon the
kind of surface you are on, you may
experience slipping, sliding, wheel
spinning, delayed acceleration, poor
traction, and longer braking distances.
Surface Obstacles. Unseen or hidden
obstacles can be hazardous.
A rock, log,
hole, rut, or bump can startle you if
you’re not prepared for them. Often these
obstacles are hidden by grass, bushes,
snow or even the rise and fall
of the
terrain itself. Here are some things to
consider:
0 Is the path ahead clear?
0 Will the surface texture change
abruptly up ahead?
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Your Driving and the Road
0 Does the travel take you uphill or
downhill? (There’s more discussion of
these subjects later.)
change direction quickly?
0 Will you have to stop suddenly or
When you drive over obstacles or rough
terrain, keep a firm grip
on the steering
wheel.
Ruts, troughs, or other surface
features can jerk the wheel out of your
hands
if you’re not prepared.
When you drive over bumps, rocks, or
other obstacles, your wheels can leave
the
ground. If this happens, even with one or
two wheels, you can’t control the vehicle
as well or at all.
Because you will be on an unpaved
surface,
it’s especially important to avoid
sudden acceleration, sudden turns, or
sudden braking.
In a way, off-road driving requires a
different kind of alertness from driving on
paved roads and highways. There are no
road signs, posted speed limits or signal
lights.
You have to use your own good
judgment about what is safe and what
isn’t.
Drinking and driving can be very
dangerous on any road. And this
is
certainly true for off-road driving. At the
. . .I10
very time you need special alertness and
driving skills, your reflexes, perceptions
and judgment can be affected by even a
small amount of alcohol.
You could have
a serious - or even fatal - accident if
you drink and drive or ride with a driver
who has been drinking. (See “Drunken
Driving”
in the Index.)
Driving On Off-Road Hills
Off-road driving often takes you up,
jown, or across a hill. Driving safely on
hills requires good judgment and an
understanding of what your vehicle can
md can’t do. There are some hills that
;imply can’t be driven, no matter how
well built the vehicle.
Approaching a Hill
When you approach a hill, you need to
decide if
it’s one of those hills that’s just
too steep to climb, descend, or cross.
Steepness can be hard
to judge. On a very
small
hill, for example, there may be a
smooth, constant incline with only a small
change
in elevation where you can easily
see all the way to the top. On a large hill,
the incline may get steeper as you near
the top, but you may not see this because
the crest of
the hill is hidden by bushes,
grass,
or shrubs.
Here are some other things
to consider as
you approach a hill.
Is there a constant incline, or does the
hill get sharply steeper in places?
Is there good traction on the hillside,
or will the surface cause tire slipping?
Is there a straight path up or down the
hill so you won’t have to make turning
maneuvers?
Are there obstructions on the hill that
can block your path (boulders, trees,
logs or ruts)?
What’s beyond the hill?
Is there a cliff,
an embankment, a drop-off, a fence?
Get out and walk the
hill if you don’t
know. It’s the smart way to find out.
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0 Is the hill simply too rough‘? Steep hills
often have ruts, gullies, troughs and
exposed rocks because
they are more
susceptible
to the effects of erosion.
Driving Uphill
Once you decide you can safely drive up
the hill,
you need to take some special
steps.
0 Use a low gear and get a firm grip on
the steering wheel.
Get a smooth start up the hill and try
to maintain your speed. Don’t use
more power than
you need, because
you don’t want your wheels
to start
spinning or sliding.
Try to drive straight up the hill if at a1
possible.
If the path twists and turns,
you might want to find another route.
0
0
0
0
Ease up on your speed as you
approach the top
of the hill.
Attach a flag to the vehicle to tnake
you more visible to approaching
traffic on trails
or hills.
Sound the
horn as you approach the
top
of the hill to let opposing traffic
know you’re there.
Use your headlights even during the
day. They make you more visible
to
oncoming traffic.
Q: What should I do if my vehicle
A:
0
0
0
0
stalls, or is about to stall, and I can’t
make
it up the hill?
If this happens, there are some things
you should do, and there are some
things you must not do. First, here’s
what you should do:
Push the brake pedal
to stop the
vehicle and keep
it from rolling
backwards. Also, apply
the parking
brake.
If your engine is still running, shift the
transmission into reverse, release the
parking brake, and slowly back down
the
hill in reverse.
If your engine has stopped running,
you’ll need to restart it. With the brake
pedal depressed and
the parking brake
still applied,
shift the transmission to
“P” (Park) (or, shift to “N” (Neutral)
if your vehicle has a manual
transmission) and restart
the engine.
Then, shift
to reverse, release the
parking brake, and slowly back down
the
hill as straight as possible in
reverse.
As you are backing down the hill, put
your left hand
on the steering wheel at
the
12 o’clock position. This way,
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Your Driving and the Road
you'll be able to tell if your wheels are
stl-aisht and maneuver
as you back
down. It's best thur ~LI i);\c.l; c'lown the
hill with your wheeis straight rather
than
in the left or right direction.
Turning the wheel
too far to the left or
right will increase the possibility of a
rollover.
Here are some things you must
not do if
you stall, or are about to stall, when going
up a
hill.
0
Never attempt to prevent a stall by
shifting
into "N" (Neutral) (or
depressing
the clutch. if you have a
manual transmission) to "rev-up" the
engine and regain forward rnornentum.
This won't work. Your vehicle
will
roll backwards very quickly and you
could
go out of control. Instead. apply
the regular brake to stop the vehicle.
Then apply the parking brake. Shift into reverse, release the parking brake,
and slowly back straight down.
Never attempt
to turn around if you
are about
to stall when going up a hill.
If the hill is steep enough to stall your
vehicle, it's steep enough to cause
you
to roll over if you turn around. If you
can't make
it up the hill, you must
back straight down the
hill.
0: Suppose, after stalling, I try to back
down the hill and decide
I just can't
do it. What should I do?
A: Set the parking brake, put your
transmission
in "P'* (Park) (or the
manual transmission in first gear). and
turn off the engine. Leave the vehicle
and go get some help. Exit on the
uphill side and
stay clear of the path
the vehicle would take
if it rolled
downhill.
Do not shift thc transfer
case
to "N" (Neutral) when you leave
the vehicle. Leave it in some gear.
Driving Downhill
When off-roading takes you downhill,
JOU'II want to consider a number of
hings:
D How steep is the downhill'? Will I be
able
to maintain vehicle control'?
D What's the surfilce like? Smooth?
Rough'! Slippery'? Hard-packed dirt?
Gravel'?
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0 Are there hidden surface obstacles?
Ruts? Logs? Boulders?
0 What’s at the bottom of the hill? Is
there a hidden creek bank or even a
river bottom with large rocks?
If you decide you can go down a
hill
safely, then try to keep your vehicle
headed straight down, and use a low gear.
This way, engine drag can help your
brakes and they won’t have to do all the
work. Descend slowly, keeping your
vehicle under control at all times.
Q: Are there some things I should not
do when driving down
a hill?
A: Yes! These are important because if
you ignore them you could lose
control and have a serious accident.
When driving downhill, avoid turns
that take you across the incline
of the
hill.
A hill that’s not too steep to drive
down may be too steep to drive
across. You could roll over if you
don’t drive straight down.
Never go downhill with the
transmission in “N” (Neutral), or with
the clutch pedal depressed in a manual
shift. This is called “free-wheeling.”
Your brakes will have to do all the
work and could overheat and fade.
Avoid braking
so hard that you lock
the front wheels when going downhill.
If your front wheels are locked, you
can’t steer your vehicle. If your
wheels lock up during downhill
braking, you may feel the vehicle
starting to slide sideways.
To regain
your direction, just ease
off the brakes
and steer to keep the front of the
vehicle pointing straight downhill.
Q: Am I likely to stall when going
downhill?
A:
0
0
0
0
It‘s much more likely to happen going
uphill.
But if it happens going
downhill, here’s what to do.
Stop your vehicle by applying the
regular brakes. Apply the parking
brake.
Shift to
“P” (Park) (or to Neutral with
the manual transmission) and, while
still braking, restart the engine.
Shift back to a low gear, release the
parking brake, and drive straight down.
If the engine won’t start, get out and
get help.
Driving Across an Incline
Sooner or later, an off-road trail will
probably go across the incline
of a hill. If
this happeris, you have to decide whether
to try to drive across the incline. Here are
some things to consider:
0 A hill that can be driven straight up
or down may be too steep to drive
across. When you go straight up or
down a hill, the length
of the wheel
base (the distance from the front
wheels to the rear wheels) reduces the
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Your Driving and the
0
0
likelihood the vehicle will tumble end
over end.
But when you drive across
an
incline. the much more narrow
track width
(the distance between the
left and right whecls) may not prevent
the vehicle from tilting and rolling
over.
Also, driving across an incline
puts more weight on the downhill
wheels. This could cause a downhill
slide or a rollover.
Surfkce conditions can be
a problem
when you drive across
il hill. Loose
gravel, muddy spots. or even wet
grass can cause your tires
to slip
sideways, downhill.
If the vehicle
slips sideways.
it can hit something
that
will trip it (a rock, a rut, etc.) and
roll over.
Hidden obstacles can make the
steepness
of the incline even worse. If
you drive across a rock with the uphill wheels, or
if the downhill wheels drop
into
a rut or depression. your vehicle
can
tilt even more.
For reasons like these, you need
to decide
carefully whether
to try to drive across an
incline. Just because the trail goes across
the incline doesn’t mean
you have to
drive it. The last vehicle to iry it might
have rolled over.
Road
Drivihg across an incline that’s too
steep
will make your vehicle roll
over. You could be seriously injured
or killed. If you have any doubt about
the steepness
of the incline, don’t
drive across it. Find another route
instead.
Q: What if I’m driving across an
incline that’s not too steep, but I hit
some loose gravel and start to slide
downhill. What should
I do‘?
A: If you feel your vehicle starting to
slide sideways, turn downhill. This
should help straighten out the vehicle
and prevent the side slipping. However
a much better way to prevent this is to
get
out and “walk the come” so you
know what the surface is like bcforc
you drive it.
Stalling on an Incline
If your vehicle stalls when you’re
crossing an incline, be sure
you (and your
passengers) get out
on the uphill side,
even
if the door there is harder to open. If
you get
out on the downhill side and the
vehicle starts to roll over,
you’ll be right
in its path.
If
you have to walk down the slope, stay
out of the path the vehicle will take if
it
does roll over.
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A CAUTION:
Driving in Mud, Sand, Snow or Ice
When you drive in mud, snow or sand,
your wheels won't get good traction. You
can't accelerate as quickly, turning is
more difficult, and you'll need longer
braking distances.
It's best to use a low gear when you're in
mud -the deeper the mud, the lower the
gear.
In really deep mud, the idea is to
keep your vehicle moving so you don't
get stuck.
When
you drive on sand, you'll sense a
change
in wheel traction. But it will
depend upon how loosely packed the sand
is. On loosely packed sand (as on beaches
or sand dunes) your tires will tend
to sink
into the sand. This has an effect on
steering. accelerating, and braking. You
may want to reduce the air pressure
in
your tires slightly when driving on sand.
This will improve traction.
Hard packed snow and ice offer the worst
tire traction. On these surfaces, it's very
easy
to lose control. On wet ice, for
example, the traction is
so poor that you
will have difficulty accelerating. .4nd
if
you do get moving, poor steering and
difficult braking can cause
you to slide
out of control.
A CAUTION:
Driving in Water
Light rain causes no special off-road
driving problems. But heavy rain can
mean tlash flooding, and tlood
waters
demand extreme caution.
Find out how deep the water is before you
drive through it.
If it's deep enough to
cover your wheel hubs, axles, or exhaust
pipe, don't
try il - you probably won't
get through.
Also, water that deep can
damage your axle and other vehicle parts.
If the water
isn't too deep, then drive
through
it slowly. At fast speeds. water
splashes on your ignition system and
your
vehicle can stall. Stalling can also occur if
you get your tailpipe under water. ,4nd, as
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Your Driving and the Road
long as your tailpipe is under water, you'll
never be able to
start your engine. When
you go through water, remember that
when your brakes get wet, it may take
you longer to stop.
After Off-Road Driving
Remove any brush or debris that has
collected
on the underbody, chassis or
under the hood. These accumulations can
be a fire hazard.
After operation in mud or sand, have the
brake linings cleaned and checked. These
substances can cause glazing and uneven
braking. Check the body structure,
steering, suspension, wheels, tires, and exhaust system
for damage.
Also, check
the fuel lines and cooling system for any
leakage.
Your vehicle will require more frequent
service due to off-road
use. Refer to the
Maintenance Schedule for additional
information.
4 Driving at Night
Night driving is more dangerous than day
driving. One reason is that some drivers
are likely
to be impaired - by alcohol or
drugs, with night vision problems, or by
fatigue.
Here are some tips on night driving.
Drive defensively.
Don't drink and drive.
Adjust your inside rearview mirror to
reduce the glare from headlights
behind you.
Since you can't see as well,
you may
need to slow down and keep more space between
you and other vehicles.
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