1996 PONTIAC GRAND-AM Owners Manual

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 h/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; and the condition
of your brakes.
4-5 ,. I ProCarManuals.com

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
hut 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 m’ay take longer to stop and the brake pedal
will be harder to push.
5: , ‘
AntbLsck Brakes
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.
(e)
If there’s a problem with the
anti-lock brake system,
this
warning light will stay on.’
See “Anti-Lock Brake
System Warning Light”
in
the Index.
4-6
ProCarManuals.com

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.
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. 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.
4-7
ProCarManuals.com

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 hav’e
anti-lock
brakes.
Using AntkLock
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.
Enhanced Traction System
If your vehicle has the optional four-speed automatic
transaxle, it
also has an Enhanced Traction System
(ETS) that limits wheel spin. This is especially useful in
slippery road condittons. The system operates only if it
senses that one or both of the front wheels we spinning
or beginning to lose traction. When this happens, the
system reduces engine power and may also upshift the
transaxle to limit wheel spin.
I
LOW
TRAC
This light will come on
when your Enhanced
Traction System is limiting
wheel
spin. See “Enhanced
Traction System Active
Light”
in the Index. You
may feel or hear the system
working, but this
is normal.
The
Enhanced Traction System operates in all transaxle
shift lever positions. But the system can upshift the
transaxle 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.
4-8 -
ProCarManuals.com

ETS
OFF
~~~
When this warning light is When the system
is on and
the
parking brake is fully
released, this warning light
will come
on to let you
know if there’s a problem
with the system. See
“Enhanced Traction System
on, the system will not limit
To turn the system on or off,
press the button on the shift
lever knob.
wheel spin. Adjust your driving accordingly. When you turn ‘the system off, the Enhanced Traction
To limit wheel spin, especially in slippery road System warning light will come on and stay on. If the
conditions, you should always leave the Enhanced Enhanced Traction System is limiting wheel spin when
Traction System
on. But YOU Can turn the system Off if . you press the button to turn the system off, the warning
you ever need to. (YOU should turn the system
Off if your
light will come on -_ but the system won’t turn off right
vehicle ever gets stuck in sand, mud, ice or snow. See
away. It will wait until there’s no longer a current need
“Rocking Your Vehicle”
in the Index.) to limit wheel spin.
You can turn the system back on at any time
by pressing
’ the button again. The Enhanced Traction System
warning light should go off.
4-9
ProCarManuals.com

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. Tn many emergencies, steerirzg’cm help you more
thin 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
parlcitlg ad at low vehicle speeds. Steering effurt 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 is the one factor you can
control.
4-10,
ProCarManuals.com

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. Unless you
have the Enhanced Traction System and the system
is
on, 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 spe,eds 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
1 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 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.
1 :
4-11
ProCarManuals.com

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.
..._ - '
Off-Road Recovwy ,. t
', %
You may find sometime that your right wheels have
dropped
off the edge of a road onto the shoulder while
you're
driving.
OFF-RUAD RECOVERY
/- / ,zl I I
-/// edge of paved surface
I
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 one-quarter turn
until the right front tire contacts the pavement edge. Then
turn your steering wheel to go straight down the roadway.
4-12
ProCarManuals.com