1997 PONTIAC PONTIAC brakes

Wac System Warning Light
Your regular brake system may not be working
properly if the anti-lock brake system warning
light is flashing, Driving with the anti-lock brake
system w’arning light flashing
can lead to an
accident, After you’ve pulled off the road
and
stopped carefully, have the vehicle towed
for service.
TRAC
OFF
With the Trac System, this
warning light should come
on briefly as you start the
engine.
If the warning light
doesn’t come on then,
have it fixed
so it will be
ready to warn you if
there’s a problem.
If the anti-lock brake system warning light stays on
longer than normal after you’ve started your engine, turn
the ignition
off. Or, if the light comes o,n and stays on
when you’re driving,
stop as soon as possible and turn
the ignition off. Then start the engine again to reset the
system.
If the light still stays on, or comes on again
while you’re driving, your
Pontiac needs service. If the
light is on but not flashing and the regular brake system
warning light isn’t
on, you still have brakes, but you
don’t have anti-lock brakes.
The anti-lock brake system warning light should come
on briefly when you turn the ignition key
to RUN. If the
light doesn’t
come on then, have it fixed €0 if will b’e
ready to warn you if there is a problem. .
If it stays on, or comes on when you’re driving, there
may be
a problem with your Trac System and your
vehicle may need service, When this warning light
is on, the system will not limit wheel spin. Adjust
your driving accordingly.
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Control of a Vehicle
You have three systems that make your vehicle go where
you want it to go. They are the brakes, the steering and
the accelerator. All three systems have to do their work
at the places where
the tires meet the road.
Sometimes,
as when you’re driving on snow or ice, it’s
easy to ask more
of those control systems than the tires
and road can provide. That means
you can lose control
of your vehicle.
Braking
Braking action involves perception time and
reaction time.
First, you have to decide to push on the brake pedal.
That’s
perception time. Then you have to bring up your
foot and
do it. That’s reaction time.
Average reaction time is about 3/4 of a second. But
that’s only an average.
It might be less with one driver
and as long as two or three seconds or more with
another. Age, physical condition, alertness, coordination
and eyesight all play a part. So do alcohol, drugs and
frustration. But even in 3/4 of a second, a vehicle
moving at
60 mph (100 km/h) travels 66 feet (20 m).
That could
be a lot of distance in an emergency, so
keeping enough space between your vehicle and
others
is important.
And,
of course, actual stopping distances vary greatly
with the surface
of the road (whether it’s pavement or
gravel); the condition
of the road (wet, dry, icy); tire
tread; the condition of your brakes; the weight of the
vehicle and the amount of brake force applied.
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Avoid needless heavy braking. Some people drive in
spurts
-- heavy acceleration followed by heavy
braking
-- rather than keeping pace with traffic. This is a
mistake. Your brakes may not have time to cool between
hard stops. Your brakes will wear out much faster if you
do a lot of heavy braking. If you keep pace with the
traffic and allow realistic following distances, you will
eliminate a lot of unnecessary braking. That means
better braking and longer brake life.
If
your engine ever stops while you’re driving, brake
normally but don’t pump your brakes.
If you do, the
pedal may get harder to push down.
If your engine
stops, you will still have some power brake assist. But
you
will use it when you brake. Once the power assist is
used up, it may take longer to stop and the brake pedal
will be harder to push.
Anti-Lock Brakes (ABS)
Your vehicle has anti-lock brakes (ABS). ABS is an
advanced electronic braking system that will help
prevent a braking skid.
When you start your engine, or when you
begin to drive
away, your anti-lock brake system will check itself. You
may hear a momentary motor or clicking noise while
this test is going on, and you may even notice that your
brake pedal moves a little. This is normal.
If there’s a problem with the
anti-lock brake system, this
warning light will stay on or
flash. See “Anti-Lock
Brake System Warning
Light” in the Index.
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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.
LOW
TRAC
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.
Trac System (Option: Not Available with
3800 Supercharged Engine)
Your vehicle may have Trac System that limits wheel
spin. This
is especially useful in slippery road
conditions. The system operates only if it senses that one
or both of the front wheels are spinning or beginning to
lose traction. When this happens, the system reduces
engine power and may also upshift the transaxle to limit
wheel spin.
LOW
TRAC
This light will come on
when your Trac System is
limiting wheel spin. See
“Trac System Active Light”
in
the Index. You may feel
or hear the system working,
but this is normal.
The Trac System operates in all transaxle shift lever
positions. But the system can upshift
the tran.saxle only
as high as the shift lever position you’ve chosen, so you
should use the lower gears only when necessary. See
“Automatic Transaxle” in the Index.
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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 betw,een
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 Pontiac can perform very well in emergencies like
these. First apply
your brakes. (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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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 Pontiac’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 is best handled by easing your foot off
the accelerator pedal.
If you have the Trac System, remember: It helps avoid
only the acceleration skid. If
you do not have the Trac System, or if the system is
off, then an acceleration skid is also 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 slud
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.
Remember: Any anti-lock brake system (ABS) helps
avoid only the braking skid.
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The heavier the rain, the harder it is to see. Even if your
windshield wiper blades are in good shape, a heavy rain
can make it harder to see road signs and traffic signals,
pavement markings, the edge
of the road and even
people walking.
It’s wise to keep your windshield wiping equipment
in good shape and keep your windshield washer tank
filled with washer fluid. Replace your windshield wiper
inserts when they show signs
of streaking or missing
areas on the windshield, or when strips
of rubber start to
separate from
the inserts. Driving
too fast through large water puddles
or even
going through some car washes can cause problems, too.
The water
may affect your brakes. Try to avoid puddles.
But if you can’t, try to slow down before you hit them.
Wet brt L c% le accidents. They won’t work
as well
in a quick stop and may cause pulling to
one side.
You could lose control of the vehicle.
After driving through a large puddle of water or
a car wash, apply your brake pedal lightly until
your brakes work normally.
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