2001 CHEVROLET CORVETTE ABS

2-85 Anti-Lock Brake System Warning Light
With the anti-lock brake
system, the light will come
on when your engine is
started and may stay on
for several seconds.
That's normal.
If the light stays on, turn the ignition to OFF. Or, if the
light comes on when you're driving, stop as soon as
possible and turn the ignition off. Then start the engine
again to reset the system. If the light still stays on, or
comes on again while you're driving, your vehicle needs
service. If the regular brake system warning light isn't
on, you still have brakes, but you don't have anti
-lock
brakes. If the regular brake system warning light is also
on, you don't have anti
-lock brakes and there's a
problem with your regular brakes. See ªBrake System
Warning Lightº earlier in this section. Also see ªService
ABSº under ªDriver Information Center (DIC)
Messagesº in the Index.
The anti
-lock brake system warning light should come
on briefly when you turn the ignition key to ON. If the
light doesn't come on then, have it fixed so it will be
ready to warn you if there is a problem.
Traction Control System (TCS) Light
This light should come
on briefly as you start the
engine. If the light doesn't
come on then, have it fixed
so it will be ready to warn
you if there's a problem.
If it stays on, or comes on and the DIC shows a
SERVICE TRACTION SYSTEM message when you're
driving, there's a problem with your TCS system and
your vehicle needs service. When this light is on, the
system will not limit wheel spin. Adjust your driving
accordingly. If the driver turns off the Traction Control
System by pressing the button on the console, the
TCS system light will come on and the TRACTION
SYSTEM OFF message will show on the DIC.

2-103 DIC Warnings and Messages
The following messages and warnings may appear in the
DIC display. The DIC display area is located in the
instrument panel cluster below the speedometer and
tachometer, directly above the steering column. You may
receive more than one message at a time. Messages will
appear one behind the other. To acknowledge a message
and remove it from the display, press RESET. You may
scroll through the messages that may have been sent at the
same time. The message center is continuously updated
with the vehicle performance status.
ABS ACTIVE (Anti
-Lock Brake System Active):
When your anti
-lock system is adjusting brake pressure
to help avoid a braking skid, the ABS ACTIVE message
will be displayed.
Slippery road conditions may exist if this message is
displayed, so adjust your driving accordingly. The
message will stay on for a few seconds after the system
stops adjusting brake pressure.
ACT HNDLG
- WARMING UP: When you first start
your vehicle (especially during cold winter weather),
and begin to drive away (up to 6 mph (10 km/h)), the
message ACT HNDLG
- WARMING UP may be
displayed in the DIC, the instrument panel cluster light
will be on, and a chime will sound. This is normal.
You can acknowledge this message by pressing theRESET button. The Active Handling System
performance is affected until the next message WARM
UP COMPLETE is displayed in the DIC.
During hot or cold temperature conditions, this message
may be displayed in the DIC after exceeding 12 mph
(20 kph) for 30 seconds. The Active Handling System is off
until the WARM UP COMPLETE message is displayed.
WARM UP COMPLETE: If you receive this message
and hear a chime, the system has completed the
functional check of the Active Handling System.
TRAC/ACT HNDLG
- ON: If the Traction Control and
Active Handling Systems are off, depressing the Active
Handling System console button momentarily will turn
both systems on. The message TRAC/ACT HNDLG
- ON
will be displayed temporarily in the DIC, the instrument
panel cluster light will be off and a chime will sound.
TRAC/ACT HNDLG
- OFF: By pressing the Active
Handling System console button briefly, the driver can
turn the Traction Control and Active Handling Systems
off. The message TRAC/ACT HNDLG
- OFF will be
displayed in the DIC, the instrument panel cluster light
will be on and a chime will sound. You can acknowledge
this message by pressing the RESET button. The anti
-lock
brake systems remains on with the Traction Control and
Active Handling Systems off. You should adjust your
driving accordingly.

2-104
COMPETITIVE DRIVING: When the Competitive
Driving mode is selected, this message will be displayed
in the DIC. The instrument panel cluster light will not be
on when the Competitive Driving mode is selected. The
Traction Control System will not be operating while in
the Competitive Driving mode. You should adjust your
driving accordingly.
SERVICE ABS (Anti
-Lock Brake System): If the
SERVICE ABS message is displayed when you are driving,
stop as soon as possible and turn the ignition off. Then start
the engine again to reset the system. If the message stays
on, or comes back on again while you are driving, your
vehicle is in need of service. If the regular brake system
warning light isn't on, you still have brakes, but don't have
anti
-lock brakes. If the regular brake system light is also on,
you don't have anti
-lock brakes and there is a problem with
your brakes. See ªBrake System Warning Lightº earlier in
this section.
If the SERVICE ABS message is being displayed, your
traction control system and the optional active handling
system will also be disabled. The driver information
center will scroll three messages: SERVICE ABS,
SERVICE TRACTION SYS and SERVICE ACTIVE
HNDLG, and the instrument cluster car icon will be
illuminated. The driver can acknowledge these messages
by pressing the reset button three times. When the service message is displayed the computer
controlled systems will not assist the driver and you
should have the system repaired as soon as possible.
Adjust your driving accordingly.
SERVICE COLUMN LOCK
(Manual Transmission Only): If the system that
controls the locking and unlocking of the steering
column does not work properly, have the vehicle towed
to a dealer for service.
PULL KEY
- WAIT 10 SEC: If this message comes on,
the steering column lock system has detected a problem
while engaging the steering column lock. This message may
occur when the ignition key is removed and reinserted
before the steering column lock system fully locks or
unlocks the steering column. To acknowledge that you have
read this message, and to clear it from the display, remove
the ignition key and wait 10 seconds before reinserting the
key into the ignition. If you attempt to operate your vehicle
without removing the key for 10 seconds, the vehicle's fuel
system will shut off when you reach 1.5 mph (2.4 km/h).
If the message stays on after removing the key and waiting
10 seconds, have your vehicle taken to an authorized dealer
as soon as possible for diagnosis and repair.

2-107
SERVICE RIDE CONTROL: This message is
used to indicate to the driver that the Selective Real Time
Damping (SRTD) system has detected a malfunction and
that the system must be serviced. The SERVICE RIDE
CONTROL message will always come on when a failure
is detected by the Selective Real Time Damping (SRTD)
system. If a fault is present in the SRTD which causes the
shocks to be in their full soft condition, the SERVICE
RIDE CONTROL, SHOCKS INOPERATIVE and
MAXIMUM 80 MPH (129 km/h) will display together.
You will never get a SHOCKS INOPERATIVE and
MAXIMUM SPEED 80 MPH (129 km/h) message
without a SERVICE RIDE CONTROL message.
SHOCKS INOPERATIVE: You will hear four chimes
when this message is displayed. To acknowledge that
you have read the message and to remove it from the
display, press RESET. The message will reappear every
10 minutes until this condition changes.
This message indicates that a malfunction is present in the
Selective Real Time Damping (SRTD) system which is
causing the shocks to be in their full soft mode. This is a
warning to the driver that the vehicle handling may be
affected. Have your vehicle serviced as soon as possible.MAXIMUM SPEED 80 MPH (129 km/h): You will
hear four chimes when this message is displayed. To
acknowledge the warning, press RESET. After you press
RESET, a message will reappear every 10 minutes until
this condition changes.
This message indicates that the vehicle speed will be
limited to 80 mph (129 km/h) when the shock absorber
system has failed and the shocks are in their full soft
mode. Have your vehicle serviced as soon as possible.
COOLANT OVER TEMP: You will hear four chimes
and the CHECK GAGES telltale will come on when this
message is displayed. To acknowledge the warning,
press the RESET button. After you press the RESET
button, a message will be displayed and you will hear a
chime every minute until this condition changes. If you
do not press RESET, the message will remain on the
digital display until the condition changes.
If the engine coolant exceeds 255
F (124
C), this
message is displayed. If you have been operating your
vehicle under normal driving conditions, you should
pull off from the road, stop your vehicle and turn off the
engine as soon as possible. You can monitor the coolant
temperature with the GAGES button on the DIC or the
engine coolant gage on the instrument panel cluster. See
ªEngine Overheatingº in the Index.

3-6
As the interior of the vehicle warms up to your comfort
set temperature, the fan speed will decrease and the
temperature output may become cooler. If the interior
temperature continues to warm up due to heating from
the sun or outside temperature increases, the system
may switch to other air delivery modes (typically
DEFOG or BI
-LEVEL).
A Typical Hot Weather Example:
The vehicle has been parked outside all day in hot
weather above 80
F (27
C) and you have set the driver
temperature at 73
F (23
C) and have selected the
AUTO mode. The system will automatically adjust the
temperature output to maximum cooling. The fan will
start at a low speed momentarily to push the hot air to
the floor of the vehicle and then go to a higher fan speed
with cold airflow out of the instrument panel outlets. A
small amount of airflow will continue through the lower
ducts to cool the floor area.The air intake may start in the recirculated mode for
maximum cooling performance. As the interior of the
vehicle cools down to your comfort set temperature,
the fan speed will decrease and the temperature output
may become warmer. The air intake may shift from
recirculation to outside air mode. If the interior
continues to cool due to a decrease in the amount of heat
the vehicle is absorbing from the sun or a decrease in the
outside temperature, the system could switch to other air
delivery modes (typically BI
-LEVEL or DEFOG).
Manual Settings
With the automatic electronic dual climate control
system, there are several manual settings you can use to
control the system and override the AUTO operation.
You can program the fan speed, air delivery mode, air
intake mode and control the air conditioning operation
using these settings. The system will still determine the
temperature output level based on the driver
-set
temperature and the passenger temperature offset.

3-9
Operating the system in the recirculation mode may
cause fogging of the vehicle's windows when the
weather is cold and damp. To clear the fog, switch the
system to either the DEFOG or DEFROST mode and
increase the fan speed. To avoid re
-fogging of the
windows, operate the system in the OUTSIDE
AIR mode.
FRONT: Press the FRONT defrost button to
quickly remove fog or frost from the windshield. This
setting directs most of the airflow to the windshield and
a small amount toward the lower and side window
outlets. The light on the button will come on and the
digital display will show the defrost mode symbol and
fan speed when the front defrost mode is being used.
Pressing FRONT defrost again will return the system to
the last operating mode and the air intake mode will be
in OUTSIDE AIR.
If the system is in FRONT defrost when you shut the
engine off, it will restart in FRONT defrost unless the
engine is off for longer than 40 minutes. If the engine is
off longer than 40 minutes, the system will restart in the
operating mode you had set prior to FRONT defrost and
the air intake mode will be in OUTSIDE AIR.
See ªRear Window Defoggerº later in this section for
more information.
Sensors
The automatic electronic dual climate control system
uses several sensors to control operation and
display information.
Solar Load Sensor
This sensor is located on the top right side of the
defroster grille. The defroster grille is on the top of
the instrument panel.
The sensor monitors the sun's solar radiation and uses
this information as part of the automatic climate control
system when operating in the AUTO mode.
Be careful not to put anything over the sensor. When
covered, the sensor cannot compensate for changes in
the amount of heat the vehicle is absorbing from the sun.

4-7
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 but 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 may take longer to stop and the brake pedal
will be harder to push.
Anti-Lock Brakes (ABS)
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 and 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.
If there's a problem with the
anti
-lock brake system, this
warning light will stay on.
See ªAnti
-Lock Brake
System Warning Lightº in
the Index.

4-8
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 and continue braking. 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 wheel.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. This can help you steer around the obstacle
while braking hard.
As you brake, your computer keeps receiving updates on
wheel speed and controls braking pressure accordingly.