traction control PONTIAC G6 2007 User Guide

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 are driving on snow or
ice, it is easy to ask more of those control systems
than the tires and road can provide. That means
you can lose control of your vehicle. SeeTraction
Control System (TCS) on page 262,Enhanced
Traction System (ETS) on page 263and
StabiliTrak
®System on page 265.
Adding non-GM accessories can affect your
vehicle’s performance. SeeAccessories and
Modications on page 308.
Braking
SeeBrake System Warning Light on page 199.
Braking action involves perception time and
reaction time.
First, you have to decide to push on the brake
pedal. That is perception time. Then you have to
bring up your foot and do it. That is reaction time.
Average reaction time is about three-fourths of a
second. But that is 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 three-fourths 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 is
pavement or gravel; the condition of the road,
whether it is wet, dry, or icy; tire tread; the
condition of the brakes; the weight of the vehicle;
and the amount of brake force applied.
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Traction Control System (TCS)
Your vehicle may have 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 reduces
engine power and may also upshift the transaxle
to limit wheel spin. Also, the traction control system
activates the appropriate corner brakes to gain
even quicker control to limit wheel spin.
This light, located on the
instrument panel, will
come on when your
Traction Control System
is limiting wheel spin.
You may feel or hear the system working, but this
is normal.
If your 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 you to safely use it
again, you may re-engage the cruise control. See
Cruise Control on page 171.
The Traction Control System operates in all
transaxle shift lever positions except park or
neutral. 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. SeeAutomatic Transaxle
Operation on page 129.
This light is located on
the instrument panel
cluster.
When the system is on, this light will come on to let
you know if there’s a problem, or if the system has
been turned off.
When this warning light is on, the system will not
limit wheel spin. Adjust your driving accordingly.
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To limit wheel spin, especially in slippery road
conditions, you should always leave the Traction
Control System on. But you can turn the system off
if you prefer.
To turn the system on or off, press the traction
control button (TC) located under the climate
controls. In order to effectively “rock” the vehicle,
you will need to turn off TCS.
If you press the TC button once, the traction control
system will turn off and the traction control system
warning light will come on. The StabiliTrak
®system
will stay on. Press the TC button again to turn the
system back on. The traction control system
warning light will go off. If you press and hold the
TC button, the StabiliTrak
®system and the traction
control system will turn off. Press the TC button
again to turn StabiliTrak
®and the traction control
system back on. For more information, see
StabiliTrak
®System on page 265.
When you turn the system off, the Traction Control
System warning light will come on and stay on.
If the Traction Control System is limiting wheel spin
when you press the button to turn the system
off, the warning light will come on – but the system
won’t turn off right away. It will wait until there’s
no longer a current need to limit wheel spin.Adding non-GM accessories can affect your
vehicle’s performance. SeeAccessories and
Modications on page 308for more information.
Enhanced Traction System (ETS)
Your vehicle may have 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.
This light, located on
the instrument panel,
will come on when your
Enhanced Traction
System is limiting
wheel spin.
You may feel or hear the system working, but this
is normal.
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If your vehicle is in cruise control when the
enhanced traction system begins to limit wheel
spin, the cruise control will automatically
disengage. When road conditions allow you to
safely use it again, you may re-engage the cruise
control. SeeCruise Control on page 171.
The Enhanced Traction System operates in all
transaxle shift lever positions except park, neutral
or reverse. 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. SeeAutomatic Transaxle
Operation on page 129.
This light is located on
the instrument panel
cluster.
When the system is on, this light will come on to
let you know if there’s a problem, or if the
system has been turned off.When this warning light is on, the system will not
limit wheel spin. Adjust your driving accordingly.
To limit wheel spin, especially in slippery road
conditions, you should always leave the Enhanced
Traction System on. But you can turn the system
off if you prefer.
To turn the system on or off, press the traction
control button located on the instrument panel. In
order to effectively “rock” the vehicle, you will
need to turn off the traction control system.
When you turn the system off, the Enhanced
Traction System warning light will come on and
stay on. If the Enhanced Traction System is
limiting wheel spin when you press the button to
turn the system off, the warning light will come
on – but the system won’t turn off right away. It will
wait until there’s no longer a current need 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.
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StabiliTrak®System
Your vehicle may be equipped with a vehicle
stability enhancement system called StabiliTrak®.
It is an advanced computer controlled system
that assists you with directional control of
the vehicle in difficult driving conditions.
StabiliTrak
®activates when the computer senses
a discrepancy between your intended path
and the direction the vehicle is actually traveling.
StabiliTrak
®selectively applies braking pressure
at any one of the vehicle’s brakes to help steer the
vehicle in the direction which you are steering.
This symbol will appear
when the StabiliTrak
®
system is activated.
When you rst start your vehicle and begin to
drive away, the system performs several diagnostic
checks to insure there are no problems. You
may hear or feel the system working. This
is normal and does not mean there is a problem
with your vehicle.This light is located on
the instrument panel
cluster.
When the system is on, this light will come on to let
you know if there’s a problem, or if the system has
been turned off.
StabiliTrak
®comes on automatically whenever
you start your vehicle. To help assist you
with directional control of the vehicle, you should
always leave the system on. You can turn the
traction control system and StabiliTrak
®off if you
ever need to by pressing and holding the TC
(traction control) on/off button. press the TC button
again to turn StabiliTrak
®and the traction control
system back on. SeeTraction Control System
(TCS) on page 262for more information.
If your vehicle is in cruise control when the
StabiliTrak
®activates, the cruise control will
automatically disengage. When road conditions
allow you to safely use it again, you may reengage
the cruise control. SeeCruise Control on
page 171for more information.
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Steering
Electric Power Steering
If your vehicle has the electric power steering
system and the engine stalls while you are driving,
the power steering assist system will continue to
operate until you are able to stop your vehicle. If
you lose power steering assist because the electric
power steering system is not functioning, you can
steer, but it will take more effort.
If you turn the steering wheel in either direction
several times until it stops, or hold the steering
wheel in the stopped position for an extended
amount of time, you may notice a reduced amount
of power steering assist. The normal amount of
power steering assist should return shortly after a
few normal steering movements.
The electric power steering system does not
require regular maintenance. If you suspect
steering system problems, contact your dealer for
service repairs. SeeDIC Warnings and Messages
on page 212.
Hydraulic Power Steering
If your vehicle has the hydraulic power steering
system and you lose power steering assist
because the engine stops or the power steering
system is not functioning, you can steer, but it will
take much more effort.
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 262,Enhanced Traction System
(ETS) on page 263andStabiliTrak
®System
on page 265.
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 308.
267

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.
Loss of Control
Let us review what driving experts say about what
happens when the three control systems — brakes,
steering, and acceleration — do not have enough
friction where the tires meet the road to do what the
driver has asked.
In any emergency, do not 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
vehicle’s three control systems. In the braking skid,
your wheels are not 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 your vehicle does not have a traction system, or
if the traction system is off, an acceleration skid
is also best handled by easing your foot off
the accelerator pedal. SeeEnhanced Traction
System (ETS) on page 263,Traction Control
System (TCS) on page 262,orStabiliTrak
®
System on page 265.
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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.
Of course, traction is reduced when water, snow,
ice, gravel, or other material is on the road.
For safety, you will 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 reducing vehicle speed 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.If you have the Anti-Lock Brake System (ABS),
remember: It helps avoid only the braking skid. If
you do not have ABS, 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.
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.
Do not drink and drive.
Adjust the inside rearview mirror to reduce the
glare from headlamps behind you.
Since you cannot see as well, you may need
to slow down and keep more space between
you and other vehicles.
272

What is the worst time for this? Wet ice. Very cold
snow or ice can be slick and hard to drive on.
But wet ice can be even more trouble because it
may offer the least traction of all. You can get
wet ice when it is about freezing, 32°F (0°C), and
freezing rain begins to fall. Try to avoid driving
on wet ice until salt and sand crews can get there.
Whatever the condition — smooth ice, packed,
blowing, or loose snow — drive with caution.If you have a traction system, it will improve your
ability to accelerate when driving on a slippery
road. Even though your vehicle has a traction
system, you will want to slow down and adjust
your driving to the road conditions. Under certain
conditions, you may want to turn the traction
system off, such as when driving through deep
snow and loose gravel, to help maintain vehicle
motion at lower speeds. SeeTraction Control
System (TCS) on page 262,Enhanced Traction
System (ETS) on page 263,orStabiliTrak
®System
on page 265.
Unless you have the Anti-Lock Brake System
(ABS), you will want to brake very gently, too. If
you do have ABS, seeAnti-Lock Brake System
(ABS) on page 259. ABS improves your vehicle’s
stability when you make a hard stop on a
slippery road. Whether you have ABS or not, you
will want to begin stopping sooner than you
would on dry pavement. Without ABS, if you feel
your vehicle begin to slide, let up on the brakes
a little. Push the brake pedal down steadily to get
the most traction you can.
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