PONTIAC GRAND PRIX 2007 Owners Manual

Remember: ABS does not 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 will not 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 ABS.
Using ABS
Do not pump the brakes. Just hold the brake
pedal down rmly and let anti-lock work for you.
You may feel a slight brake pedal pulsation
or notice some noise, but this is normal.
Braking in Emergencies
At some time, nearly every driver gets into a
situation that requires hard braking.
If you have ABS, you can steer and brake at the
same time. However, if you do not have ABS, your
rst 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 cannot 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 do not have ABS, use a “squeeze” braking
technique. This will give you maximum braking
while maintaining steering control. You can 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 ABS, it is different. SeeAnti-Lock
Brake System (ABS) on page 289.
In many emergencies, steering can help you more
than even the very best braking.
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Traction Control System (TCS)
If the vehicle has the 3800 Supercharged V6
engine or the 5.3L V8 engine, it has a Traction
Control System (TCS) 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 works the front brakes and reduces
engine power to limit wheel spin.
This symbol, along with
the TRACTION
CONTROL ACTIVE
message, comes on the
DIC screen when the
system is active.
You may feel or hear the system working, but this
is normal.When the traction control system is not working,
one of these symbols will come on the instrument
panel cluster.
This symbol is located
on the instrument panel
cluster.
This symbol, along with the message TRACTION
CONTROL OFF will display in the DIC for
three seconds when the traction control system
is disabled.
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If there is a problem with the system, the service
traction system will also appear on the DIC.
When these symbols and messages appear on
the instrument panel and the DIC, the system will
not limit wheel spin. Adjust driving accordingly.
The traction control system automatically comes
on whenever the vehicle is started. To limit
wheel spin, especially in slippery road conditions,
always leave the system on. But the traction
control system can be turned off if needed. The
system should be turned off if the vehicle ever gets
stuck in sand, mud, or snow and rocking the
vehicle is required. SeeRocking Your Vehicle to
Get It Out on page 316andIf Your Vehicle is
Stuck in Sand, Mud, Ice, or Snow on page 316for
more information.
Press the traction
control button located
on the console to
turn the system off.If the system is limiting wheel spin when the
traction control button is pressed, the system will
turn off instantly. Turn the system back on at
any time by pressing the button again.
If the vehicle is in cruise control when the traction
control system begins to limit wheel spin, the
cruise control will automatically disengage. When
road conditions allow safe use of it, the cruise
control can be used again. SeeCruise Control on
page 140.
Adding non-GM accessories can affect your
vehicle’s performance. SeeAccessories and
Modications on page 336for more information.
Enhanced Traction System (ETS)
If the vehicle has the 3800 V6 engine and anti-lock
brakes, it has an Enhanced Traction System
(ETS) 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.
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This symbol comes on
the Driver Information
Center (DIC) when
the ETS is limiting
wheel spin.
If the vehicle is in cruise control when ETS begins
to limit wheel spin, the cruise control will
automatically disengage. When road conditions
allow safe use of it, the cruise control can be used
again. SeeCruise Control on page 140.
ETS operates in all transaxle shift lever positions.
But the system can upshift the transaxle only
as high as the chosen shift lever position, so use
the lower gears only when necessary. See
Automatic Transaxle Operation on page 110.One of these lights will appear on the instrument
panel to indicate that the ETS is not on.
This symbol, along
with the message
TRACTION CONTROL
OFF will display on the
DIC for three seconds
when the ETS is not on.
If there is a problem with the system, the service
traction system will also come on in the DIC.
SeeEnhanced Traction System Warning Light on
page 179. When this warning light is on, the
system will not limit wheel spin. Adjust driving
accordingly.
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To limit wheel spin, especially in slippery road
conditions, the ETS should always be left on. But
the system can be turned off. The system should be
turned off if the vehicle ever gets stuck in sand,
mud, or snow and rocking the vehicle is required.
SeeRocking Your Vehicle to Get It Out on
page 316andIf Your Vehicle is Stuck in Sand,
Mud, Ice, or Snow on page 316for more
information.
Press the traction
control button located
on the console to
turn the system off.
If the system is limiting wheel spin when the
button is pressed, the system will turn off instantly.
Press the traction control button again to turn
the system on.StabiliTrak®Plus System
The vehicle may have a vehicle stability
enhancement system called StabiliTrak®Plus. It is
an advanced computer controlled system that
assists with directional control of the vehicle
in difficult driving conditions.
StabiliTrak
®Plus comes on whenever the vehicle
is started. It activates when the computer
senses a discrepancy between the intended path
and the direction the vehicle is actually traveling.
StabiliTrak
®Plus selectively applies braking
pressure at any one of the vehicle’s brakes to
help control the vehicle in the steering direction.
This symbol, along
with the STABILITY
CONTROL ACTIVE
message comes on the
Driver Information
Center (DIC).
SeeDIC Warnings and Messages on page 200.
You may also hear a noise or feel vibration in the
brake pedal. This is normal. Continue to steer
the vehicle in the desired direction.
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This symbol will appear
on the DIC.
If there is a problem detected with StabiliTrak
®
Plus, this symbol along with the SERVICE
STABILITY SYSTEM warning message will
come on the DIC.
SeeDIC Warnings and Messages on page 200.
When this message is displayed, the system is not
operational. Driving should be adjusted accordingly.
To turn the StabiliTrak
®system off (GXP only),
press and hold the traction control button for more
than ve seconds. A message will appear on the
DIC indicating that StabiliTrak
®has been turned off.
You can turn the system back on at any time by
pressing the button again.
If the vehicle is in cruise control when StabiliTrak
®
Plus activates, the cruise control will automatically
disengage. When road conditions allow safe use of
it, the cruise control can be used again. SeeCruise
Control on page 140for more information.
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
If your vehicle has this steering system, the system
provides less steering effort for parking and when
driving at speeds below 20 mph (32 km/h). Steering
effort will increase at higher speeds for improved
road feel.
Steering Tips
It is important to take curves at a reasonable speed.
A lot of the “driver lost control” accidents
mentioned on the news happen on curves.
Here is 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 is
no traction, inertia will keep the vehicle going in the
same direction. If you have ever tried to steer a
vehicle on wet ice, you will understand this.
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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 are in a curve, speed is
the one factor you can control.
Suppose you are 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 are 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. SeeTraction Control System (TCS) on
page 292orEnhanced Traction System (ETS) on
page 293.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 will
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.
Adding non-GM accessories can affect your
vehicle’s performance. SeeAccessories and
Modications on page 336.
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Steering in Emergencies
There are times when steering can be more
effective than braking. For example, you come over
a hill and nd 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 cannot; there is not room. That is the time for
evasive action — steering around the problem.
Your vehicle can perform very well in emergencies
like these. First apply your brakes.
SeeBraking on page 288. 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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Off-Road Recovery
You may nd that your right wheels have dropped
off the edge of a road onto the shoulder while
you are 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 one-quarter turn until the right front tire
contacts the pavement edge. Then turn your
steering wheel to go straight down the roadway.
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 is
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 are awaiting an opportunity. For
one thing, following too closely reduces your
area of vision, especially if you are following a
larger vehicle. Also, you will not 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 do not 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.
If other vehicles are lined up to pass a slow
vehicle, wait your turn. But take care that
someone is not 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 vehicle’s 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 vehicle’s inside
mirror, activate the right lane change signal and
move back into the right lane. Remember that
your vehicle’s passenger side 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.
Do not overtake a slowly moving vehicle too
rapidly. Even though the brake lamps are not
ashing, it may be slowing down or starting
to turn.
If you are being passed, make it easy for the
following driver to get ahead of you. Perhaps
you can ease a little to the right.
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