lock CHEVROLET CORVETTE 2004 5.G Workshop Manual

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 the
RESET 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 km/h) for 30 seconds. The Active Handling System is
off until the WARM UP COMPLETE message is
displayed.
ACTIVE HANDLING:Your vehicle is equipped with a
computer controlled system to assist the driver in
controlling the vehicle in difficult driving conditions. You
may feel or hear the system working and see the
ACTIVE HANDLING message displayed in the DIC.
This is normal when the system is operating. Also see
Braking on page 4-6.
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{CAUTION:
When the LOW TIRE PRESSURE or FLAT TIRE
message is displayed on the Driver Information
Center, your vehicle’s handling capabilities will
be reduced during severe maneuvers. If you
drive too fast, you could lose control of your
vehicle. You or others could be injured. Don’t
drive over 55 mph (90 km/h) when the LOW
TIRE PRESSURE or FLAT TIRE message is
displayed. Drive cautiously and check your tire
pressures as soon as you can.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 a malfunction is present in
the selective real time damping system. 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.
PULL KEY – WAIT 10 SEC (Manual Transmission
Only):If this message comes on, the steering column
lock system has detected a problem while disengaging
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.
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REDUCED ENGINE POWER:You will hear chimes
continuously 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 15 seconds until this condition
changes.
If the Driver Information Center (DIC) displays the
REDUCED ENGINE POWER message and the CHECK
ENGINE light comes on, a noticeable reduction in the
vehicle’s performance may occur. If the REDUCED
ENGINE POWER message is displayed but there is no
reduction in performance, proceed to your destination.
The performance may be reduced the next time
the vehicle is driven.
The vehicle may be driven at a reduced speed while the
REDUCED ENGINE POWER message is displayed,
but acceleration and speed may be reduced. Anytime
the CHECK ENGINE light stays on, the vehicle
should be taken to an authorized dealer as soon as
possible for diagnosis and repair.
Also, refer toMalfunction Indicator Lamp on page 3-41.
If the REDUCED ENGINE POWER message is
displayed in combination with the COOLANT OVER
TEMP message, seeEngine Overheating on page 5-26.REDUCE ENGINE RPM:You will hear four chimes
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 oil temperature exceeds 320°F (160°C),
this message is displayed. You should check the engine
coolant temperature and engine oil level. If your
engine is too hot, seeEngine Overheating on page 5-26.
Your vehicle may need service, so see your dealer.
You can monitor the oil temperature with the GAGES
button on the DIC.
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
is not on, you still have brakes, but do not have anti-lock
brakes. If the regular brake system light is also on,
you do not have anti-lock brakes and there is a problem
with your brakes. SeeBrake System Warning Light
on page 3-38.
3-64

If the SERVICE ABS message is being displayed, your
Traction Control System and the 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 ACTIVE HANDLING:If the SERVICE
ACTIVE HNDLG message is displayed, there is a
problem with your Active Handling System and your
vehicle needs service. The instrument cluster light
will also be on and a chime will sound. When this
message is displayed, the system is not working. 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.
SERVICE RIDE CONTROL:This message is used to
indicate to the driver that the Selective Ride Control
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 Ride Control system. If a fault is
present in the Selective Ride Control system which
causes the shocks to be in their full soft condition, the
SERVICE RIDE CONTROL, SHOCKS INOPERATIVE
and MAXIMUM SPEED 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.
3-65

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.
TRAC/ACT HNDLG – ON:If the Traction Control and
Active Handling Systems are off, pressing 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.TRACTION SYS ACTIVE:When your Traction Control
System is limiting wheel spin, the TRACTION SYS
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 Traction Control
System stops limiting wheel spin.
TRACTION SYSTEM – OFF:You will hear a single
quick tone when this message is displayed. This
message comes on and stays on when the Traction
Control System button on the console is pressed to turn
the system off. To acknowledge this message, press
RESET.
TRACTION SYSTEM – ON:This message is displayed
when you decide to turn on the Traction Control
System by pressing the switch on the console. This
message will shut off automatically on its own.
WARM UP COMPLETE:If you receive this message
and hear a chime, the system has completed the
functional check of the Active Handling System.
3-67

Radio with Cassette
Your vehicle is equipped with six Bose®amplified
speakers. See your dealer for details.
Playing the Radio
PWR (Power):Press this knob to turn the system on
and off.
VOL (Volume):Turn this knob to increase or to
decrease the volume.
RECALL:Press this button to switch the display
between the radio station frequency and the time. When
the ignition is off, press this knob to display the time.
SCV (Speed-Compensated Volume):With SCV,
the audio system adjusts automatically to make up for
road and wind noise as you drive.
Set the volume at the desired level. Turn the control
ring behind the power knob clockwise to increase
the SCV. Each notch on the control ring allows for more
volume compensation at faster vehicle speeds. Then,
as you drive, SCV automatically increases the volume,
as necessary, to overcome noise at any speed. The
volume level should always sound the same to you as
you drive.To turn SCV off, turn the control ring all
the way down.
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Radio with CD
Your vehicle is equipped with six Bose®amplified
speakers. See your dealer for details.
Playing the Radio
PWR (Power):Press this knob to turn the system on
and off.
VOL (Volume):Turn this knob to increase or to
decrease volume.
RECALL:Press this button to switch the display
between the radio station frequency and the time. Time
display is available with the ignition turned off.
SCV (Speed-Compensated Volume):With SCV, your
audio system adjusts automatically to make up for
road and wind noise as you drive.
Set the volume at the desired level. Turn the control
ring behind the power knob clockwise to increase
the SCV. Each notch on the control ring allows for more
volume compensation at faster vehicle speeds. Then,
as you drive, SCV automatically increases the volume,
as necessary, to overcome noise at any speed. The
volume level should always sound the same to you as
you drive. If you do not want to use SCV, turn the control
all the way down.
3-76

Theft-Deterrent Feature
THEFTLOCK®is designed to discourage theft of your
vehicle’s radio. It works by using a secret code to
disable all radio functions whenever battery power is
interrupted.
The THEFTLOCK
®feature for the radio may be used or
ignored. If ignored, the radio plays normally and the
radio is not protected by the feature. If THEFTLOCK
®is
activated, the radio will not operate if stolen.
When THEFTLOCK
®is activated, LOC will appear on
the radio display to indicate a locked condition anytime
battery power has been interrupted. If the battery
loses power for any reason, you must unlock the radio
with the secret code before it will operate.
Activating the Theft-Deterrent Feature
The instructions which follow explain how to enter
your secret code to activate the THEFTLOCK®system.
Read through all nine steps before starting the
procedure.
If you allow more than 15 seconds to elapse between
any steps, the radio automatically reverts to time
and you must start the procedure over at Step 4.1. Write down any three or four-digit number from 000
to 1999 and keep it in a safe place separate from
the vehicle.
2. Turn the ignition on.
3. Turn the radio off.
4. Press the 1 and 4 pushbuttons at the same time.
Hold them down until --- appears on the display.
Next you will use the secret code number which you
have written down.
5. Press MN and 000 will appear on the display.
6. Press MN again to make the last two digits agree
with your code.
7. Press HR to make the first one or two digits agree
with your code.
8. Press AM FM after you have confirmed that the
code matches the secret code you have written
down. REP will appear on the display to indicate
that Steps 5 through 7 need to be repeated to
confirm your secret code.
9. Press AM FM again. SEC will appear on the display
to indicate that the radio is secure.
3-86

Unlocking the Theft-Deterrent Feature
After a Power Loss
Enter your secret code as follows; pause no more than
15 seconds between steps:
1. Turn the ignition on. LOC will appear on the
display.
2. Press MN and 000 will appear on the display.
3. Press MN again to make the last two digits agree
with your code.
4. Press HR to make the first one or two digits agree
with your code.
5. Press AM FM after you have confirmed that the
code matches the secret code you have written
down. SEC will appear on the display, indicating the
radio is now operable and secure.
If you enter the wrong code eight times, INOP will
appear on the display. You will have to wait an hour
with the ignition on before you can try again. When you
try again, you will only have three chances, eight
tries per chance, to enter the correct code before INOP
appears.
If you lose or forget your code, contact your dealer.
Disabling the Theft-Deterrent Feature
Enter your secret code as follows; pause no more than
15 seconds between steps:
1. Turn the ignition on.
2. Turn the radio off.
3. Press and hold the 1 and 4 pushbuttons at the
same time until SEC appears on the display.
4. Press MN and 000 will appear on the display.
5. Press MN again to make the last two digits agree
with your code.
6. Press HR to make the first one or two digits agree
with your code.
7. Press AM FM after you have confirmed that the
code matches the secret code you have written
down. --- will appear on the display, indicating that
the radio is no longer secured.
If the code entered is incorrect, SEC will appear on the
display. The radio will remain secured until the correct
code is entered.
When battery power is removed and later applied to a
secured radio, the radio will not turn on and LOC
will appear on the display.
To unlock a secured radio, see “Unlocking the
Theft-Deterrent Feature After a Power Loss” earlier in
this section.
3-87

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 are driving, brake
normally but do not 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 Brake System (ABS)
Your vehicle has anti-lock brakes. 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 is a problem with
the anti-lock brake system,
this warning light will
stay on. SeeAnti-Lock
Brake System Warning
Light on page 3-39.
4-7