wheel CHEVROLET CORVETTE 2007 6.G Service Manual

Competitive Driving Mode
The driver can select this optional handling mode
by pressing the ACTIVE HANDLING button on
the console two times within a ve second
time period. COMPETITIVE DRIVING MODE will
be displayed in the DIC. Competitive Driving
Mode allows the driver to have full control of the
rear wheels while the Active Handling System
helps maintain directional control of the vehicle by
selective brake application. This involves less
intervention than with both the Active Handling
System and Traction Control Systems on.
The instrument cluster light will not be on. The
Traction Control System will not be operating.
Adjust your driving accordingly.
When you press the ACTIVE HANDLING button
again, or turn the ignition to Acc., the Active
Handling and Traction Control Systems will
be on. The TRACTION SYSTEM AND ACTIVE
HANDLING-ON message will be displayed
temporarily in the DIC and a chime will be heard.Notice:When traction control is turned off,
or Competitive Driving Mode is active, it
is possible to lose traction. If you attempt to
shift with the rear wheels spinning with a loss
of traction, it is possible to cause damage
to the transmission. Do not attempt to shift
when the rear wheels do not have traction.
Damage caused by misuse of the vehicle
is not covered. See your warranty book for
additional information.
Limited-Slip Rear Axle
Your limited-slip rear axle can give you additional
traction on snow, mud, ice, sand or gravel.
It works like a standard axle most of the time,
but when one of the rear wheels has no traction
and the other does, this feature will allow the
wheel with traction to move the vehicle.
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Selective Ride Control
You may have a ride control system on your
vehicle called Magnetic Selective Ride Control.
The system provides the following performance
benets:
Reduced Impact Harshness
Improved Road Isolation
Improved High-Speed Stability
Improved Handling Response
Better Control of Body Ride Motions
This knob is located
on the center console.
Turn it to select the
suspension of your
choice.
TOUR:Use for normal city and highway driving.
This setting provides a smooth, soft ride.SPORT:Use where road conditions or personal
preference demand more control. This setting
provides more “feel”, or response to the road
conditions.
You can select a setting at any time. Based on road
conditions, steering wheel angle and your vehicle
speed, the system automatically adjusts to provide
the best ride and handling. Select a new setting
whenever driving conditions change.
There are three Driver Information Center (DIC)
messages that are displayed when a
malfunction occurs with the Selective Ride
Control system (SERVICE RIDE CONTROL,
SHOCKS INOPERATIVE, MAXIMUM SPEED
80 MPH (129 KM/H). Refer toDIC Warnings and
Messages on page 214for 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.
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Magnetic Speed Variable
Assist Steering
Your vehicle has a steering system that
continuously adjusts the effort you feel when
steering at all vehicle speeds. It provides ease
when parking, yet a rm, solid feel at highway
speeds.
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.
The traction you can get in a curve depends on
the condition of the 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 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.
SeeTraction Control System (TCS) on page 281.
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 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
the 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-dealer/non-retailer accessories can
affect your vehicle’s performance. SeeAccessories
and Modications on page 319.
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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 the brakes. SeeBraking
on page 278. 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 vehicle’s 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 the 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.
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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 might 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, the 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.
Remember: Any traction control system helps
avoid only the acceleration skid. If your traction
control system is off, then an acceleration
skid is also best handled by easing your foot off
the accelerator pedal.
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Highway Hypnosis
Is there actually such a condition as highway
hypnosis? Or is it just plain falling asleep at the
wheel? Call it highway hypnosis, lack of
awareness, or whatever.
There is something about an easy stretch of road
with the same scenery, along with the hum of the
tires on the road, the drone of the engine, and the
rush of the wind against the vehicle that can make
you sleepy. Do not let it happen to you! If it does,
your vehicle can leave the road in less than a
second, and you could crash and be injured.What can you do about highway hypnosis?
First, be aware that it can happen.
Then here are some tips:
Make sure your vehicle is well ventilated, with
a comfortably cool interior.
Keep your eyes moving. Scan the road ahead
and to the sides. Check your rearview mirrors
and your instruments frequently.
If you get sleepy, pull off the road into a rest,
service, or parking area and take a nap, get
some exercise, or both. For safety, treat
drowsiness on the highway as an emergency.
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You will need a well-charged battery to restart the
vehicle, and possibly for signaling later on with
your headlamps. Let the heater run for a while.
Then, shut the engine off and close the window
almost all the way to preserve the heat. Start
the engine again and repeat this only when you
feel really uncomfortable from the cold. But do it as
little as possible. Preserve the fuel as long as
you can. To help keep warm, you can get out of
the vehicle and do some fairly vigorous exercises
every half hour or so until help comes.
If Your Vehicle is Stuck in Sand,
Mud, Ice, or Snow
In order to free your vehicle when it is stuck, you
need to spin the wheels, but you do not want
to spin the wheels too fast. The method known
as rocking can help you get out when you
are stuck, but you must use caution.
{CAUTION:
If you let your vehicle’s tires spin at high
speed, they can explode, and you or others
could be injured. And, the transmission or
other parts of the vehicle can overheat.
That could cause an engine compartment
re or other damage. When you are stuck,
spin the wheels as little as possible. Do not
spin the wheels above 35 mph (55 km/h)
as shown on the speedometer.
Notice:Spinning the wheels can destroy
parts of your vehicle as well as the tires.
If you spin the wheels too fast while shifting
the transmission back and forth, you can
destroy the transmission.
For information about using tire chains on your
vehicle, seeTire Chains on page 401.
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Rocking Your Vehicle to Get It Out
First, turn the steering wheel left and right to
clear the area around the front wheels. Turn the
traction control system off. SeeTraction Control
System (TCS) on page 281. Then shift back
and forth between REVERSE (R) and a forward
gear, spinning the wheels as little as possible.
For a manual transmission, shift slowly
between either FIRST (1) or SECOND (2) and
REVERSE (R), allowing the wheels to stop
before shifting into gear. To prevent transmission
wear, wait until the wheels stop spinning before
shifting gears. Release the accelerator pedal while
you shift, and press lightly on the accelerator
pedal when the transmission is in gear. By slowly
spinning the wheels in the forward and reverse
directions, you will cause a rocking motion
that could free your vehicle. If that does not get
your vehicle out after a few tries, it might need to
be towed out. If your vehicle does need to be
towed out, seeTowing Your Vehicle on page 315.
Loading Your Vehicle
It is very important to know how much weight your
vehicle can carry. This weight is called the vehicle
capacity weight and includes the weight of all
occupants, cargo and all nonfactory-installed
options. Two labels on your vehicle show how much
weight it may properly carry, the Tire and Loading
Information label and the Certication label.
{CAUTION:
Do not load your vehicle any heavier than
the Gross Vehicle Weight Rating (GVWR),
or either the maximum front or rear Gross
Axle Weight Rating (GAWR). If you do,
parts on your vehicle can break, and it
can change the way your vehicle handles.
These could cause you to lose control
and crash. Also, overloading can shorten
the life of your vehicle.
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Towing
Towing Your Vehicle
Consult your dealer or a professional towing
service if you need to have your disabled vehicle
towed. SeeRoadside Assistance Program
on page 458.
Recreational Vehicle Towing
Recreational vehicle towing means towing your
vehicle behind another vehicle — such as behind
a motorhome. The two most common types
of recreational vehicle towing are known as“dinghy towing”, towing your vehicle with all
four wheels on the ground, and “dolly towing”,
towing your vehicle with two wheels on the
ground and two wheels up on a device known
as a “dolly”.
Your vehicle was not designed to be towed with
any of its wheels on the ground. If your vehicle
must be towed, see “Towing Your Vehicle” earlier
in this section.Towing a Trailer
Your Corvette is neither designed nor intended
to tow a trailer.
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