PONTIAC GRAND-PRIX 1993 Owners Manual

Your Driving and the Road
Disc Brake Wear Indicators
(COWT.)
NOTICE
Continuing to drive with worn-out
brake pads could result in costly
brake repair.
Some driving conditions or climates
may cause a brake squeal when the
brakes are first applied or lightly
applied. This does not mean something
is wrong
with your brakes.
Brake linings should always be replaced
as complete axle sets.
Brake Pedal Travel
See your dealer if the brake pedal does
not return to normal height, or
if there
is a rapid increase in pedal travel. This
could be a sign
of brake trouble.
Brake Adjustment
Every time you make a moderate brake
stop, your disc brakes adjust for wear. If
you rarely make a moderate or heavier
stop, then your brakes might not adjust
correctly. If you drive in that way,
then-very carefully-make a few
moderate brake stops about every
1,000
miles (1 600 km) , so your brakes will
adjust properly.
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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 the
Index under Anti-Lock
Brake System.)
In many emergencies,
steering can help you more than even
the very best braking.
Power Steering
If you lose power steering assist
because the engine stops or the system
fails to function, you can steer but it
will take much more effort.
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Your Driving and the Road
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.
152
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 at 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? Let 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.
When you drive into a curve at night,
it’s harder to see the road ahead of you
because it bends away from the straight
beams
of your lights. This is one good
reason to drive slower.
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,'here are times when steering can be
more e-- :tive than braking. For
example, you come over a hill and find
a truck stopped in your lane, or a car
sudderdy pulls out from nowhere, or a
child darts out from between parked
tops right
in front of you. You
these problems by braking-if
op in time. But sometimes
there isn't room. That's the
vasive action-steering
le problem.
.tiac can perform very well in
like these. First apply your
tut, unless you have anti-lock,
;h to lock your wheels. It is
memove as much speed as you
Steering
There are
more effe 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.
You
must then be prepared to steer back to
your original lane and then brake
to a
controlled stop. Depending
on your speed, this can be
rather violent for an unprepared driver.
This
is one of the reasons driving
experts recommend that
you use your
safety belts and keep both hands on the
steering wheel.
The fact that such emergency situations
are always possible is a good
reason to
practice defensive driving at all times.
7
153 m.
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Your Driving and the Road
Off-Road Recovery
You may find sometime that your right
wheels have dropped
off the edge of a
road onto the shoulder while you’re
driving.
If the level of the shoulder is only
slightly below the pavement, recovery
should be fairly easy. Ease
off the
accelerator and then, if there is nothing
in the way, steer
so that your vehicle
straddles the edge of the pavement. You
can turn the steering wheel up to ‘/4
turn until the right front tire contacts
the pavement edge. Then turn your
steering wheel to go straight down the
roadway.
If the shoulder appears to be about four
inches (100 mm) or more below the
pavement, this difference can cause
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problems. If there is not enough room
to pull entirely onto the shoulder and
stop, then follow the same procedures.
But
if the right front tire scrubs against
the side
of the pavement, do not steer
more sharply. With too much steering
angle, the vehicle may jump back onto
the road with
so much steering input
that it crosses over into the oncoming
traffic before you can bring it back
under control. Instead, ease
off again on
the accelerator and steering input,
straddle the pavement once more, then
try again.
Passing
The driver of a vehicle about to pass
another on a two-lane highway waits for
just the right moment, accelerates,
moves around the vehicle ahead, then
goes back into the right lane again.
A
simple maneuver?
Not necessarily! Passing another vehicle
on a two-lane highway is a potentially
dangerous move, since the passing
vehicle occupies the same lane as
oncoming traffic for several seconds.
A
miscalculation, an error in judgment, or
a brief surrender to frustration or anger
can suddenly put the passing driver face
to face with the worst of all traffic
accidents-the head-on collision.
So here are some tips for passing:
“Drive ahead.” Look down the road,
to the sides, and to crossroads for
situations that might affect your
passing patterns.
If you have any
doubt whatsoever about making a
successful pass, wait for a better time.
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Watch for traffic signs, pavement markings, and lines.
If you can see a
sign up ahead that might indicate a
turn or an intersection, delay your
pass. A broken center line usually
indicates it’s all right tdpass
(providing the road ahead is clear).
Never cross a solid line
on your side
of the lane or a double solid line, even
if the road seems empty of
approaching traffic.
If you suspect that the driver of the
vehicle you want to pass isn’t aware
of your presence, tap the horn a
couple of times before passing. Or,
you can use flash-to-pass. See the
Index under Flash-to-Pass.
Do not get too close to the vehicle you
want to pass while you’re awaiting an
opportunity. For one 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.
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.
If other cars are lined up to pass a
Check your mirrors, glance over your
shoulder, and start your left lane
change signal before moving out 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.
vehicle too rapidly. Even though the
brake lights 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.
Don’t overtake a slowly moving
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Your Driving and the Road
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 and an acceleration
skid are best handled by easing your
foot
off the accelerator pedal. If your
vehicle starts to slide (as when you turn
a corner
on a wet, snow- or ice-covered
road), ease your foot
off the accelerator
pedal as
soon as you feel the vehicle start to
slide. Quickly steer the way you
want the vehicle to go.
If you start
steering quickly enough, your vehicle
will straighten out.
As it does, straighten
the front wheels.
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
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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. Steer the way you
want to go.
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. Remember, this is
the most dangerous time.
Don’t drink and drive. (See the Index
under Drunken Driving for more on
this problem.)
Adjust your inside rearview mirror to
reduce the glare hom headlights
behind you.
II
Since you can’t see as well, you may
need to slow down and keep more
space between you and other vehicles.
It’s hard to tell how fast the vehicle
ahead is going just by looking at its
taillights.
speed roads. Your headlights
can light
up only
so much road ahead.
Slow down, especially on higher
In remote areas, watch for animals.
If you’re tired, pull off the road in a
safe place and rest.
I
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Your Driving and the Road
Night Vision
No one can see as well at night as in the
daytime. But as we get older these
differences increase.
A 50-year-old
driver may require at least twice as
much light to see the same thing at
night as a 20-year-old.
What you do in the daytime can also
affect your night vision. For example, if
you spend the day in bright sunshine
you are wise to wear sunglasses. Your
eyes will have less trouble adjusting to
night.
But if you’re driving, don’t wear
sunglasses at night. They may cut down
on glare from headlights, but they also
make a lot of things invisible that
should remain visible-such as parked
cars, obstacles, pedestrians, or even
trains blocking railway crossings. You
may want to put on your sunglasses
after you have pulled into a brightly-
lighted service or refreshment area.
158
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Eyes shielded from that glare may
adjust more quickly to darkness back
on the road. But be sure to remove your
sunglasses before you leave the service
area.
You can be temporarily blinded by
approaching lights. It can tale a second
or two, or even several seconds, for
your eyes to readjust to the dark. When
you are faced with severe glare (as
from
a driver who doesn’t lower the high
beams, or a vehicle with misaimed
headlights), slow down a little. Avoid
staring directly into the approaching
lights. If there is
a line of opposing
traffic, make occasional glances over the
line of headlights to make certain that
one of the vehicles isn’t starting to
move into your lane. Once you are past
the bright lights, give your eyes time to
readjust before resuming speed.
High Beams
If the vehicle approaching you has its
high beams on, signal by flicking yours
to high and then back to low beam. This
is the usual signal to lower the
headlight beams. If the other driver still
doesn’t lower the beams, resist the
temptation to put your high beams on.
This only makes two half-blinded
drivers.
On a freeway, use your high beams only
in remote areas where you won’t impair
approaching drivers. In some places,
like cities, using high beams is illegal.
When you follow another vehicle on a
freeway or highway, use low beams.
True, most vehicles now have day-night
mirrors that enable the driver to reduce
glare. But outside mirrors are not of this
type and high beams from behind can
bother the driver ahead.
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A Few More Might Driving
Suggestions
Keep your windshield and all the glass
on your vehicle clean-inside and out.
Glare at night is made much worse by
dirt
on the glass. Even the inside of the
glass can build up a film caused
by dust.
Tobacco smoke
also makes inside glass
surfaces very filmy and
can be a vision
hazard
if it’s left there.
Dirty glass makes lights dazzle and
flash more than clean glass would,
making the pupils
of your eyes contract
repeatedly.
You might even want to
keep a cloth
and some glass cleaner in
your vehicle if you need to clean your
glass frequently. Remember
that
pur headlights light up
far less of a roadway when you are in a
turn or curve.
Keep your eyes moving; that way, it’s
easier
to pick out dimly lighted objects.
Just as your headlights should be
checked
regularly for proper aim, so
should your eyes be examined regularly.
Some drivers
suffer from night
blindness-the inability to see in dim
light-and aren’t even aware
of it.
Driving in the Rain
Rain and wet roads can mean driving
trouble. On a wet road you can’t stop,
accelerate or turn as well because your
tire-to-road traction isn’t
as good as on
dry roads. And, if your tires don’t have
much tread left, you’ll get even less
traction.
It’s always wise to
go slower and be
cautious if rain starts to fall while you
are driving. The surface may get wet
suddenly when your reflexes are tuned
for driving on dry pavement.
The heavier the rain, the harder it is
to
see. Even if your windshield wiper
blades are in
good shape, a heavy rain
can male it harder to
see road signs and
traffic signals, pavement markings, the
edge
of the road, and even people
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