2004 CHEVROLET CORVETTE warning

HIGH TIRE PRESSURE – (LF, LR, RF, RR)
(Except Z06):You will hear two 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 pressure in
one of your tires is higher than 42 psi (290 kPa). Next to
the HIGH TIRE PRESSURE message, you can see
either LF (left front), LR (left rear), RF (right front) or RR
(right rear) to indicate to you which tire is higher than
42 psi (290 kPa). You can receive more than one
tire pressure message at a time. To read other
messages that may have been sent at the same time,
press RESET. If a tire pressure message appears on the
DIC, stop as soon as you can. Have the tire pressures
checked and set to those shown on your Tire Loading
Information Label. SeeExtended Mobility Tires
(Except Z06) on page 5-61andInation - Tire
Pressure on page 5-62.HIGH TRANS TEMP (Automatic Transmission
Only):You will hear four chimes when this message is
displayed. To acknowledge this warning, press the
RESET button. After you press the RESET button, the
message will be displayed every 10 minutes until
the condition changes. If you do not press RESET, the
message remains on the display until the condition
changes.
If the transmission fluid temperature rises above 270°F
(132°C) or rises rapidly, this message is displayed.
The transmission may shift gears or apply the torque
converter clutch to reduce the fluid temperature. Driving
aggressively or driving on long hills can cause the
transmission fluid temperature to be higher than normal.
If this message appears, you may continue to drive at
a slower speed. You should also monitor the
transmission fluid temperature and allow it to cool to at
least 230°F (110°C). The transmission fluid temperature
can be monitored with the GAGES button on the
DIC. SeeAutomatic Transmission Fluid on page 5-20.
You should also check the engine coolant temperature.
If it is also hot, seeEngine Overheating on page 5-26.
If the HIGH TRANS TEMP message is displayed during
normal vehicle operation on flat roads, your vehicle
may need service. See your dealer for an inspection.
3-61

LOW OIL LEVEL:Press RESET to acknowledge that
you have read the message and to remove it from
the display. The message will reappear every
10 minutes until this condition changes. Once the
vehicle senses a temperature change in the engine oil,
the light will remain off.
You will hear two chimes when this message is
displayed. If this message appears after starting your
engine, your engine oil level may be too low. You
may need to add oil. SeeEngine Overheating on
page 5-26.
LOW OIL PRESSURE: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 the vehicle is serviced. If
you do not press RESET, the message will remain on
the digital display until the vehicle is serviced.
Low oil pressure may be the result of a combination of
low oil level and abrupt changes in the vehicle’s
direction. When this warning is displayed, you should
not operate the engine at high rpm or make fast abrupt
moves. As soon as possible, you should check the
oil level. SeeEngine Oil on page 5-13.LOW TIRE PRESSURE (Except Z06):You will hear
two chimes when this message is displayed. To
acknowledge the warning, press RESET. After you
press RESET, a message will appear every 10 minutes
until this condition changes. This message indicates
that the pressure in one of your tires is less than 25 psi
(172 kPa). Next to the LOW TIRE PRESSURE
message, you can see either LF (left front), LR (left
rear), RF (right front) or RR (right rear) to indicate to you
which tire is low on pressure. You can receive more
than one tire pressure message at a time. To read other
messages that may have been sent at the same time,
press RESET. If a tire pressure message appears on the
DIC, stop as soon as you can. Have the tire pressures
checked and set to those shown on your Tire Loading
Information Label. SeeExtended Mobility Tires
(Except Z06) on page 5-61andTire Pressure
Monitor Operation (Except Z06) on page 5-64.
3-62

{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

SERVICE TIRE MON SYS (Except Z06):If this
message comes on, a part on the Tire Pressure
Monitor (TPM) is not working properly. If you drive your
vehicle while any of the four sensors are missing or
inoperable, the warning will come on in about
10 minutes. If all four sensors are missing, the warning
will come on in about 15 to 20 minutes. All the
sensors would be missing, for example, if you put
different wheels on your vehicle without transferring the
sensors. If the warning comes on and stays on, there
may be a problem with the TPM. See your dealer.
SERVICE TRACTION SYSTEM:If the SERVICE
TRACTION SYS message is displayed when you are
driving, there is a problem with your Traction Control
System and your vehicle is in need of service. When this
message is displayed, the system will not limit wheel
spin. Adjust your driving accordingly.
The SERVICE ACTIVE HNDLG message will also be
displayed and the instrument cluster car icon will also be
illuminated. The driver can acknowledge both messages
by pressing the reset button two times which will alsoturn off the instrument cluster icon. When the service
messages are displayed, the computer controlled
systems will not assist the driver in controlling the
vehicle. Have the system repaired as soon as possible.
Adjust your driving accordingly.
SERVICE VEHICLE SOON:If this message appears
on the DIC, there may be an electrical or another system
problem with your vehicle. Have your vehicle checked
by your dealer if this message keeps appearing.
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 Ride Control 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.
3-66

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.
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Remember: Anti-lock 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 anti-lock brakes.
Using Anti-Lock
Do not pump the brakes. Just hold the brake pedal
down firmly and let anti-lock work for you. You may hear
a motor or clicking noise and feel the brake pedal
move a little during a stop, but this is normal.
Braking in Emergencies
With anti-lock, you can steer and brake at the same
time. In many emergencies, steering can help you more
than even the very best braking.
Traction Control System (TCS)
Your vehicle has a traction control system called TCS
that limits wheel spin. This is especially useful in slippery
road conditions. The system operates only if it senses
that the rear wheels are spinning too much or are
beginning to lose traction. When this happens, the
system works the rear brakes and reduces engine power
(by closing the throttle and managing engine spark) to
limit wheel spin.
The TRACTION SYS ACTIVE message will come on
when the TCS system is limiting wheel spin. See
DIC Warnings and Messages on page 3-58. You may
feel or hear the system working, but this is normal.
If your vehicle is in cruise control when the TCS 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. SeeTurn Signal/Multifunction Lever on page 3-6.
4-9

The SERVICE TRACTION
SYSTEM message and
the TCS warning light will
come on to let you
know if there is a problem
with your TCS system.
SeeDIC Warnings
and Messages on
page 3-58.
When this light and the SERVICE TRACTION SYSTEM
message are on, the system will not limit wheel spin.
Adjust your driving accordingly.
The TCS system automatically comes on whenever you
start your vehicle. To limit wheel spin, especially in
slippery road conditions, you should always leave the
system on. But you can turn the TCS system off if
you ever need to.To turn the system off,
press the button located
on the console. You
can turn the system on or
off at any time by
pressing the ACTIVE
HANDLING button. The
DIC will display the
appropriate message when
you push the button.
Active Handling System
The Active Handling System is a computer controlled
system that helps the driver maintain directional control
of the vehicle in difficult driving conditions. This is
accomplished by selectively applying any one of the
vehicle’s brakes.
When you first start your vehicle and begin to drive away
(6 mph (10 km/h)), the message ACT HNDLG WARMING
UP may be displayed in the DIC, the instrument 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 message, WARM UP COMPLETE, is
displayed in the DIC.
4-10