light PONTIAC GRAND-AM 1994 Service Manual

Your Driving and the Road
anti-Lock Brakes (ABS)
‘CONT.)
’his light on the instrument panel will go
In when you start your vehicle.
Nhen you start your vehicle, or when yo^
begin to drive away, you may hear a
nomentary motor or clicking noise. And
‘ou may even notice that your brake
edal moves a little while this
is going on
rhis is the ABS system testing itself.
If
here’s a problem with the anti-lock brakc
ystem, the anti-lock brake system
Yarning light will stay on or flash.
iee “Anti-lock Brake System Warning
ight” in the Index.
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.
Remember: Anti-lock doesn’t change the
time you need to get your foot up to the
brake pedal.
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.
... 124
ProCarManuals.com

To Use 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.
Braking in Emergencies
Use your anti-lock braking system when
you need to. With anti-lock, you can steer
and brake at the same time. 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.
Variable Effort Steering
(OPTION)
This steering system provides lighter
steering effort for parking and at low
vehicle speeds. Steering effort will
increase at higher speeds for improved
road feel.
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 isthe one factor
you can control.
Suppose you’re steering through a sharp
curve. Then you suddenly accelerate.
Both control systems
-- steering and
acceleration
-- have to do their work
where the tires meet the road. Adding the
sudden acceleration can demand too
much of those places. You can lose
control.
What should you do if this ever happens?
Ease up on the 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.
I
125...
ProCarManuals.com

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 slightlJ
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
1/4 turn until the right front
tire contacts the pavement edge. Then
turn your steering wheel to go straight
down the roadway.
<
1
(
I
I
1
7
4 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, dhen 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:
0 “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.
0
0
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 to pass
(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.
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
127...
ProCarManuals.com

Your Driving and the Road
I
0
Passing (CONT.)
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 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.)
B Try not to pass more than one vehicle
at a time on two-lane roads.
Reconsider before passing the next
vehicle.
B Don’t overtake a slowly moving
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.
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
[n a skid, a driver can lose control of the
vehicle. Defensive drivers avoid most
skids by taking reasonable care suited to
:xisting conditions, and by not
,‘overdriving” those conditions. But skids
we 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, 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.
... 128
ProCarManuals.com

Of course, traction is reduced when water, I
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 braking system (ABS) helps avoid only the braking skid.
I
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.
0 Don’t drink and drive.
Adjust your inside rearview mirror to
reduce the glare from headlights
behind you.
0 Since you can’t see as well, you may
need to slow down and keep more
space between you and other vehicles.
0 Slow down, especially on higher
speed roads. Your headlights can light
up only
so much road ahead.
In remote areas, watch for animals.
If you’re tired, pull off the mad in a
safe place and rest.
Night Wsion
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.
129...
ProCarManuals.com

Your Driving ,and the Road ’
Night Vision (CONT.)
You can be temporarily blinded by
approaching lights. It can take 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.
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. Dirty
glass makes lights dazzle and flash more
than clean glass would, making the pupils
of your eyes contract repeatedly.
Remember that your 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.
130
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
fo
driving on dry pavement.
The heavier the rain, the harder it is to
see. Even if your windshield wiper blades
xre
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 wiping equipment
in good shape and keep your windshield
washer tank filled. 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.
ProCarManuals.com

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.
I Hydroplaning
Hydroplaning is dangerous. So much
water can build up under your tires that
they can actually ride on the water. This
can happen if the road is wet enough and
you’re going fast enough. When your
vehicle is hydroplaning, it has little or
no
contact with the road.
Hydroplaning doesn’t happen often. But it
can if your tires haven’t much tread or if
the pressure in one or more is low. It can
happen if a lot of water is standing on the
road. If you can see reflections from trees,
telephone poles, or other vehicles, and
raindrops “dimple” the water’s surface,
there could be hydroplaning.
Hydroplaning usually happens at higher
speeds. There just isn’t a hard and fast
rule about hydroplaning. The best advice
is to slow down when it is raining.
Some Other Rainy
Weather
Tips
0
e
0
Turn on your low-beam headlights --
not just your parking lights -- to help
make you more visible to others.
Besides slowing down, allow some
extra following distance. And be
especially careful when you ‘pass
another vehicle. Allow yourself more
clear room ahead, and be prepared to
have your view restricted by-road
spray.
Have good tires with proper tread
depth. (See “Tires” in the Index.)
131 ...
ProCarManuals.com

Your Driving and the Road
City Driving
One of the biggest problems with city
streets is the amount of traffic on them.
You’ll want to watch out for what the
other drivers are doing and pay attention
to traffic signals.
Here are ways to increase your safety in
city driving:
0 Know the best way to get to where
you are going. Get a city map and plan
your trip into an unknown part of the
city
just as you would for a
cross-country trip.
0
Try to use the freeways that rim and
crisscross most large cities. You’ll
save time and energy. (See
the next
section, “Freeway Driving.”)
Treat a green light as a warning signal.
A traffic light is there because the
corner is busy enough to need it.
When a light turns green, and just
before you start to move, check both
ways for vehicles that have not
cleared the intersection or may be
running the red light.
Freeway Driving
Mile for mile, freeways (also called
thruways, parkways, expressways,
turnpikes, or superhighways) are the
safest of all roads. But they have their
own special rules.
The most important advice on freeway
driving is: Keep up with traffic and keep
to the right. Drive at the same speed most of the other drivers are driving. Too-fast
or too-slow driving breaks a smooth
traffic flow. Treat the left lane on
a
freeway as a passing lane.
. . . 132
ProCarManuals.com

At the entrance there is usually a ramp
that leads to the freeway. If you have a
clear view of the freeway as you drive
along
the entrance ramp, you should
begin to check traffic. Try to determine
where you expect
to blend with the flow.
Try to merge into the gap at close
to the
prevailing speed. Switch on your turn signal, check your mirrors and glance
over your shoulder as often as necessary.
Try to blend smoothly with the traffic
flow.
Once you are on the freeway, adjust your
speed to the posted limit or to the
prevailing rate if it’s slower. Stay in the
right lane unless you want to pass.
Before changing lanes, check your
mirrors. Then use your turn signal.
Just before you leave the lane, glance
quickly over your shoulder to make sure
there isn’t another vehicle in your “blind”
spot.
Once you are moving on the freeway,
make certain you allow a reasonable following distance. Expect to move
slightly slower at night.
When you want to leave the freeway,
move to the proper lane well
in advance.
If you-miss your exit do not; under any
circumstances, stop and back
up. Drive on
to the next exit.
The exit ramp can be curved, sometimes
quite sharply.
The exit speed is usually posted.
Reduce your speed according to your
speedometer, not to your sense of motion.
After driving for any distance at higher
speeds, you may tend to think you are
going slower than you actually are.
Before Leaving on a
Long Trip
Make sure you’re ready. Try to be well
rested. If
you must start when you’re not
fresh
-- such as after a day’s work --
don’t plan to make too many miles that
first part of the journey. Wear comfortable
clothing and shoes you can easily drive
in.
Is your vehicle ready for a long trip? If
you keep it serviced and maintained, it’s
ready to go. If it needs service, have it
done before starting out. .Of course, you’ll
find experienced and able service experts
in Pontiac dealerships all across North
America. They’ll be ready and willing to
help if you need it.
Here are some things you can check
before a trip:
0
0
0
0
0
0
0
Windshield Washer Fluid: Is the
reservoir full? Are all windows clean
inside and outside?
Wiper Blades: Are they in good
shape?
Fuel, Engine Oil. Other Fluids: Have
you checked all levels?
Lights:’
Are they all working? Are the
lenses clean?
Tires: They are vitally important to a
safe, trouble-free trip. Is the tread
good enough for long-distance
driving?
Are the tires all inflated to
the recommended pressure?
Weather Forecasts: What’s the
weather outlook along your route?
Should you delay your trip a short
time to avoid a major storm system?
Maps: Do you have up-to-date maps?
133...
ProCarManuals.com

Your Driving and the Road
Winter Driving
Here are some tips for winter driving:
Have your Pontiac in good shape for
winter. Be sure your engine coolant
mix is correct.
0 You may want to put winter
emergency supplies in your trunk.
Include an ice scraper, a small brush or
broom, a supply
of windshield washer
fluid, a rag, some winter outer clothing, a
small shovel, a flashlight, a red cloth, and
a couple of reflective warning triangles.
And, if you will be driving under severe
conditions, include a small bag of sand, a
piece of old carpet or a couple
of burlap
bags
to help provide traction. Be sure you
properly secure these items
in your
vehicle.
Driving on Snow or Ice
Most of the time, those places where your
tires meet the road probably have good
traction.
However, if there is snow or ice between
your tires and the road, you can have a
very slippery situation. You’ll have a lot
less traction or “grip” and will need to be
very careful.
. . . 136
ProCarManuals.com