brakes CHEVROLET TRACKER 1996 User Guide

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Here’s how anti-lock works. Let’s say the road is wet.
You’re driving safely. Suddenly an animal jumps out in
front of you.
You slam on the brakes. Here’s what happens with ABS.
A computer senses that wheels are slowing down. If one
of the wheels is about to stop rolling, the computer will
separately work
the brakes at each front wheel and at the
rear wheels. The
anti-lock system can change the brake pressure faster
than
any driver could. The computer is programmed to
make the most
of available tire and road conditions.
You can steer around the obstacle while braking hard.
As you brake, your computer keeps receiving updates on
wheel
speed and controls braking pressure accordingly.
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Remember: Anti-lock doesn’t change the time you need
to
get your foot up to the brake pedal or always decrease
stopping distance. If you get too close to the vehicle in
front
of you, you won’t have time to apply your brakes
if that vehicle suddenly slows or stops. Always leave
enough
room up ahead to stop, even though you have
anti-lock brakes.
Using Anti-Lock
Don’t pump the brakes. Just hold the brake pedal
down and let anti-lock work for you. You may feel
the system working, or you may notice some noise,
but this is normal,
ABS
ACTIVE
Braking in Emergencies
At some time, nearly every driver gets into a situation
that requires hard braking.
If
you have anti-lock, you can steer and brake at the
same time. However,
if you don’t have anti-lock, your
first reaction
-- to hit the brake pedal hard and hold it
down
-- may be the wrong thing to do. Your wheels can
stop rolling. Once they
do, the vehicle can’t respond to
your steering. Momentum will carry it in whatever
direction it was headed when the wheels stopped rolling.
That could
be off the road, into the very thing you were
trying to avoid, or into traffic.
If you don’t have anti-lock, use a “squeeze” braking
technique. This will give you maximum braking while
maintaining steering control.
You do this by pushing on
the brake pedal with steadily increasing pressure.
In an emergency, you will probably want
to squeeze the
brakes hard without locking the wheels. If you hear or
feel the wheels sliding, ease off the brake pedal. This
will help you retain steering control.
(If you do have
anti-lock, it’s different:
see “Anti-Lock Brakes” in
the Index.)
When
your anti-lock system
is adjusting brake pressure
to help avoid a braking skid,
this light will come on. See
“Anti-Lock Brake System
Active Light” in the Index.
In many emergencies, steering can help you more than
even the very best braking.
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Steering
Power Steering
If you lose power steering assist because the engine
stops or the system is not functioning, you can steer but
it will take much more effort.
Steering Tips
Driving on Curves
It’s important to take curves at a reasonable speed.
A lot of the “driver lost control” accidents mentioned on
the news happen on curves. Here’s why:
Experienced
driver or beginner, each of us is subject to
the same laws of physics when driving on curves. The
traction of the tires against the road surface makes it
possible for the vehicle to change.its path when you turn
the front wheels.
If there’s no traction, inertia will keep
the vehicle going in the same direction.
If you’ve ever
tried
to steer a vehicle on wet ice, you’ll understand this.
The traction you can get in a curve depends on the
condition
of your tires and the road surface, the angle at
which the curve is banked, and your speed. While you’re
in a curve, speed is the one factor you can control. Suppose
you’re steering through a sharp curve.
Then you suddenly apply the brakes. Both control
systems
-- steering and braking -- have to do
their work where the tires meet the road. Unless
you
have four-wheel anti-lock brakes, adding the hard
braking can demand too much
of those places. You
can lose control.
The same thing can happen if you’re steering through
a
sharp curve. and you suddenly accelerate. Those two
control systems
-- steering and acceleration -- can
overwhelm those places where the tires meet the road
and make you lose control.
What should you do
if this ever happens? Ease up on the
brake or accelerator pedal, steer the vehicle the way you
want it to go, and slow. down.
Speed limit signs near curves warn that you should
adjust your speed. Of course, the posted speeds
are
based on good weather and road conditions. Under less
favorable conditions you’ll want to
go slower.
If you need to reduce your speed as you approach a
curve, do it before you enter the curve, while your front
wheels are straight ahead.
Try to adjust your speed
so you can “drive” though the
curve. Maintain a reasonable, steady speed. Wait to
accelerate until you are out of the curve, and then
accelerate gently into the straightaway.
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Steering in Emergencies
There are times when steering can be more effective
than braking. For example, you come over a hill and
find
a truck stopped in your lane, or a car suddenly pulls
out from nowhere, or a chlld darts out from between
parked cars and
stops right in front of you. You can
avoid these
problems by braking -- if you can stop
in time, But sometimes you can’t; there isn’t room.
That’s the time for evasive action -- steering around
the problem.
Your Geo can perform very well in emergencies
like
these. First apply your brakes -- but, unless you have
anti-lock, not
enough to lock your wheels. (See
“Braking in Emergencies’’ earlier in this section.) It
is
better to remove as much speed as you can from a
possible collision. Then steer
around the problem, to the
left or right depending
on the space available, An
emergency like this requires close attention
and a
quick decision. If you are holding the steering wheel at
the recommended 9 and 3 o’clock positions, you can
turn it a full 180 degrees very quickly without removing
either hand. But you have to act fast, steer quickly, and
just as quickly straighten the wheel once
you have
avoided the object.
The fact that such emergency situations
are always
possible
is a good reason to practice defensive driving at
all times and
wear safety belts properly.
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Do not get too close to the vehicle you want to
pass while you’re awaiting an opportunity. For
me thing, following too closely reduces your area
of vision, especially if you’re following a larger
vehicle. Also, you won’t have adequate space if the
vehicle ahead suddenly
slows or stops. Keep back a
reasonable distance.
When it looks like a chance to pass
is coming up,
start to accelerate but stay in the right lane and don’t
get too close. Time your move
so you will be
increasing speed as the time comes to move into the
other lane. If the way is clear to pass, you will have a
“running start” that more than makes up for the
distance you would lose by dropping back. And if
something happens to cause you to cancel your pass,
you need only slow down and drop back again and
wait for another opportunity.
If other cars are lined up to pass a slow vehicle, wait
your turn. But take care
that someone isn’t trying to
pass you as you pull out to pass the slow vehicle.
Remember
to glance over your shoulder and check
the blind spot.
Check your mirrors, glance over your shoulder and
start your left lane change signal before moving out
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of the right lane to pass. When you are far enough
ahead of the passed vehicle
to see its front in your
inside mirror, activate your right lane
change signal
and move back into the right lane. (Remember that
your right outside mirror is convex. The vehicle you
just passed may seem to be farther away from you
than it really is.)
Try not to pass more than one vehicle at
a time
on two-lane roads. Reconsider before passing the
next vehicle.
Don’t overtake
a slowly moving vehicle too rapidly.
Even though the brake lamps are not flashing,
it may
be slowing down or starting to turn.
If you’re being
passed, make it easy for the
following driver
to get ahead of you. Perhaps you
can ease a little to the right.
Loss of Control
Let’s review what driving experts say about what
happens when the three control systems (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.
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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 aren’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
off 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. Always be ready for a
second
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.
mle driving on a surface with reduced traction, try your
best to avoid sudden steering, acceleration or braking (including engine braking by shifting
to a lower gear).
Any sudden changes could cause the tires to slide. You
may not realize the surface is slippery until your vehicle
is skidding. Learn to recognize warning clues
-- such as
enough water, ice
or packed snow on the road to make a
“,mirrored surface”
-- and slow down when you have
any doubt.
If you have the anti-lock braking system, remember: It
helps avoid only the braking skid. If you do not have
anti-lock, then in a braking skid (where the wheels are
no longer rolling), release enough pressure
on the brakes
to get the wheels rolling again. This restores steering
control. Push the brake pedal down steadily when you
have
to stop suddenly. As long as the wheels are rolling,
you will have steering control.
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Driving Guidelines
This multipurpose passenger vehicle is defined as a
utility vehicle in Consumer Information Regulations
issued by the National Highway 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 two-wheel-drive vehicles any more than
low-slung sports cars are designed to perform
satisfactorily under
off-road conditions. If at all
possible, avoid sharp turns or abrupt maneuvers.
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.
Surfaces 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.
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Driving Downhill
When off-roading takes you downhill, you’ll want to
consider a number
of things:
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How steep is the downhill? Will I be able to maintain
vehicle control?
What’s the surface like? Smooth? Rough? Slippery?
Hard-packed dirt? Gravel?
Are there hidden surface obstacles? Ruts?
Logs?
Boulders?
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.
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Heavy braking when going down a hill can cause
your brakes
to overheat and fade. This could
cause loss
of control and a serious accident.
Apply the brakes lightly when descending
a
hill and use a low gear to keep vehicle speed
under control.
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Are there some things I should not do when
driving down a hill?
A: Yes! These are important because if you ignore them
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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
NEUTRAL (N), 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.
Unless you have anti-lock: Avoid braking
so hard that
you lock
the wheels when going downhill. If your
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
du-ection, just ease
off the brakes and steer to keep the
front
of the vehicle pointing straight downhill.
Am I likely to stall when going downhill?
A: 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.
Shift to PARK (P) (or to NEUTRAL (N) with the
Apply the parking brake.
manual transmission) and, while still braking, restart
the engine.
Shift back to a low gear, release the parlung brake,
If the engine won’t start, get out and get help.
and drive straight down.
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Driving in Water
Light rain causes no special off-road driving problems.
But
heavy rain can mean flash flooding, and flood
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 it -- 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 drlve through it slowly. ,
fast speeds, water splashes on your ignition system and
your vehicle can stall. Stalling can also occur if you get
At
your tailpipe under water. And, as 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.
A CAUTION:
Driving through rushing water can be dangerous.
Deep water can sweep
your vehicle downstream
and
you and your passengers could drown, If it’s
only inches
deep, it can still wash away the
ground from under your tires, and you could lose
traction and roll the vehicle over. Don’t drive
through rushing water.
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 rnud 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 clue to
off-road
use. Refer to the Maintenance Schedule for
additional information.
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