1995 CHEVROLET S10 traction control

Downloaded from www.Manualslib.com manuals search engine To Use Four-wheel Anii-Lock
Don’t pump the brakes. Just hold the brake pedal down and let anti-lock
work for
you. You may feel the brakes vibrate, or you may notice some
noise, but
this is normal.
On vehicles with four-wheel drive, your anti-lock brakes work at all
times
- whether you are in two-wheel drive or four-wheel drive.
To Use Rear- Wheel Anii-Lock
Use rear-wheel anti-lock like regular brakes. You may feel the brakes
vibrate, or
you may notice some noise outside your vehicle, but this is
normal. Let anti-lock work for you, but remember: Your front wheels can
still stop rolling. If that happens, release enough pressure
on the brakes to
get the wheels rolling again
so that you can steer.
Braking in Emergencies
At some time, nearly every driver gets into a situation that requires hard braking.
The four-wheel anti-lock system
lets you steer and brake at the same time.
If you have the rear-wheel anti-lock braking system, your front wheels can
stop rolling when you brake very hard. Once they do, the vehicle can’t
respond to your steering. Momentum will carry
it in whatever direction it
was headed when the front wheels stopped rolling. That could be off the
road, into the very thing you were trying
to avoid, or into traffic.
So, unless you have four-wheel 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. When you do, it
will help maintain steering control. In many
emergencies, steering can help
you more than even the very best braking.
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
4-7

Downloaded from www.Manualslib.com manuals search engine 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” through the curve. Maintain a
reasonable, steady speed. Wait to accelerate until
you are out of the curve,
and then accelerate gently into the straightaway.
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 child 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 vehicle can perform very well in emergencies like these. First apply
your brakes
- but, unless you have four-wheel anti-lock, not enough to
lock your front wheels.
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.
4-8

Downloaded from www.Manualslib.com manuals search engine 0 Try not to pass more than one vehicle at a time on two-lane roads.
Reconsider before passing
the next vehicle.
0 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.
0 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.
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 vehicle’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.
While 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.
4- 11

Downloaded from www.Manualslib.com manuals search engine 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:
you approach things faster and you have less time to scan the terrain for
obstacles.
you have less time to react.
you have more vehicle bounce when you drive over obstacles.
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.
Sugace 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.
4- 14

Downloaded from www.Manualslib.com manuals search engine 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 6fi Sad, 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. And if
you do get moving, poor
steering and difficult braking can cause
you to slide out of control.
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 drive through it slowly. At fwt speeds, water
splashes
on your ignition system and your vehicle can stall. Stalling can also
occur if you get 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.
4-22

Downloaded from www.Manualslib.com manuals search engine Uniform Tire Quality Grading
The following information relates to the system developed by the United
States National Highway Traffic Safety Administration which grades tires
by treadwear, traction and temperature performance. (This applies only to
vehicles sold in the United States.)
Treadwear
The treadwear grade is a comparative rating based on the wear rate of the
tire when tested under controlled conditions on a specified government test
course. For example, a tire graded
150 would wear one and a half (1 112)
times as well on the government course as a tire graded 100. The relative
performance
of tires depends upon the actual conditions of their use,
however, and may depart significantly from the norm due to variations in
driving habits, service practices and differences in road characteristics and
climate.
Traction -A, By C
The traction grades, from highest to lowest are: A, B, and C. They represent
the tire’s ability to stop on wet pavement as measured under controlled
conditions on specified government test surfaces of asphalt and concrete.
A
tire marked C may have poor traction performance.
Warning: The traction grade assigned to this tire is based on braking
(straight-ahead) traction tests and does not include cornering (turning)
traction.
Temperature - A, 9, C
The temperature grades are A (the highest), B, and C, representing the tire’s
resistance to the generation of heat and its ability to dissipate heat when
tested under controlled conditions on a specified indoor laboratory test
wheel. Sustained high temperature can cause the material
of the tire to
degenerate and reduce tire life, and excessive temperature can lead to
sudden tire failure. The grade
C corresponds to a level of performance
which all passenger car tires must meet under the Federal Motor Vehicle
Safety Standard
No. 109. Grades B and A represent higher levels of
performance on the laboratory test wheel than the minimum required by
law.
6-44