2004 CHEVROLET CORVETTE fuel

The main components of your instrument panel are the following:
A. Instrument Panel Brightness Control. See
“Instrument Panel Brightness” underInterior Lamps
on page 3-17.
B. Head-Up Display Controls. SeeHead-Up Display
(HUD) on page 3-18.
C. Turn Signal/Multifunction Lever. SeeTurn
Signal/Multifunction Lever on page 3-6.
D. Driver Information Center (DIC). SeeDriver
Information Center (DIC) on page 3-48.
E. Instrument Panel Cluster. SeeInstrument Panel
Cluster on page 3-33.
F. Windshield Wiper/Washer Lever. See “Windshield
Wipers” underTurn Signal/Multifunction Lever
on page 3-6.
G. Driver Information Center (DIC) Controls. SeeDriver
Information Center (DIC) on page 3-48.
H. Hazard Warning Flasher Button. SeeHazard
Warning Flashers on page 3-4.
I. Center Air Outlets. SeeOutlet Adjustment on
page 3-31.
J. Audio System. SeeAudio System(s) on page 3-69.
K. Climate Controls. SeeDual Automatic Climate
Control System on page 3-23.
L. Fog Lamp Button. See “Fog Lamps” underExterior
Lamps on page 3-13.
M. Hatch/Trunk Release Button. See “Hatch/Trunk Lid
Release” underHatch/Trunk on page 2-11.N. Ignition Switch. SeeIgnition Positions on page 2-20.
O. Shift Lever (Automatic Shown). SeeAutomatic
Transmission Operation on page 2-25orManual
Transmission Operation on page 2-28.
P. Active Handling Button. SeeActive Handling System
on page 4-10.
Q. Accessory Power Outlet. SeeAccessory Power
Outlets on page 3-22.
R. Selective Ride Control Switch. SeeSelective Ride
Control on page 4-12.
S. Air Bag Off Light. SeeAir Bag Off Light on
page 3-36.
T. Instrument Panel Cupholder. SeeCupholder(s) on
page 2-40.
U. Fuel Door Release Button. SeeFilling Your Tank on
page 5-7.
V. Ashtray and Cigarette Lighter. SeeAshtrays and
Cigarette Lighter on page 3-23.
W. Parking Brake. SeeParking Brake on page 2-31.
X. Glove Box. SeeGlove Box on page 2-40.
Y. Instrument Panel Fuse Block. See “Instrument Panel
Fuse Block” underFuses and Circuit Breakers on
page 5-93.
Z. Air Bag Off Switch. SeeAir Bag Off Switch on
page 1-46.
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The information may be displayed in English or metric
units and appears as an image focused out toward
the front of your vehicle. The HUD consists of the
following information:
•Speedometer
•Turn Signal Indicators
•High-Beam Indicator Symbol
•Tachometer
•Oil, Temperature and Fuel Gages
•Shift Light (Performance SHIFT Light)
This light is used for performance driving to indicate
that the vehicle’s best performance level has been
reached to shift the transmission into the next higher
gear. The SHIFT light will display at an engine speed
of about 5,750 rpm (6,250 rpm on Z06), just prior to
reaching the engine fuel cut-off mode.
•Check Gages IconThere are five HUD selections that you can choose to
view in the HUD display. By pressing and holding
the PAGE button, you can scroll through these pages in
the following order:
•Speed Only
•Speed and Gage
•Speed, Tachometer and Gage
•Speed and Tachometer
•Tachometer Only
When you have chosen the desired HUD display,
release the PAGE button.
Gages can be scrolled through by tapping the PAGE
button (only when a gage is displayed). The gages
shown are the following:
•Oil Pressure
•Coolant Temperature
•Fuel Level
The selections that you choose will remain in the HUD
display until they are changed.
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#A/C (Air Conditioning):Press this button to
override the automatic system and turn the
air-conditioning system on or off. When A/C is pressed,
an indicator light in the button will come on to let you
know that the air conditioning is activated. When
in AUTO, the air-conditioning compressor will come on
automatically, as necessary.
Air conditioning does not operate at temperatures below
about 35°F to 40°F (2°C to 4°C). In temperatures
above 40°F (4°C), the air conditioning cannot be turned
off in defrost and defog, as it helps to remove moisture
from the vehicle. It also helps to keep the windows clear.
You may notice a slight change in engine performance
when the air-conditioning compressor shuts off and
turns on again. This is normal. The system is designed
to make adjustments to help with fuel economy while
still maintaining the selected temperature.
On hot days, open the windows to let hot inside air
escape; then close them. This helps to reduce the time
it takes for your vehicle to cool down. It also helps
the system to operate more efficiently.For quick cool down on hot days, do the following:
1. Select the vent mode.
2. Select recirculation mode.
3. Select the A/C.
4. Select the coolest temperature.
5. Select the highest fan speed.
Using these settings together for long periods of time
may cause the air inside of your vehicle to become too
dry. To prevent this from happening, after the air in
your vehicle has cooled, turn the recirculation mode off.
The air-conditioning system removes moisture from
the air, so you may sometimes notice a small amount of
water dripping underneath your vehicle while idling or
after turning off the engine. This is normal.
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Instrument Panel Cluster
Your instrument panel cluster and Driver Information Center (DIC) are designed to let you know at a glance how the
vehicle is running. You will know how fast you are going, about how much fuel you have left and many other
things you will need to know to drive safely and economically. The instrument panel cluster indicator warning lights,
gages and DIC messages are explained on the following pages.
United States shown, Canada similar
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Speedometer and Odometer
Your speedometer lets you see your speed in either
miles per hour (mph) or kilometers per hour (km/h).
There is only one scale for mph and km/h. When you
press the E/M (English/metric) button on the Driver
Information Center (DIC), the cluster will calculate the
proper speed and move the needle to the correct
position. Either the MPH or the km/h telltale will
illuminate, depending on which measurement you
choose.
To read the odometer with the ignition off, turn on the
parking lamps.
You may wonder what happens if your vehicle needs a
new odometer installed. The mileage total of the
new odometer will be set to the original miles
(kilometers) of the old odometer. See your dealer if the
odometer must be replaced in your vehicle.
Tachometer
The tachometer displays the engine speed in thousands
of revolutions per minute (rpm).
Fuel will shut off at about 6200 rpm (6500 rpm for Z06).
If you continue to drive your vehicle at the fuel shut
off rpm, you could damage your engine. Be sure
to operate your vehicle below the fuel shut off rpm or
reduce your rpm quickly when the fuel shuts off.
Safety Belt Reminder Light
When the key is turned to ON or START, a chime will
come on for several seconds to remind people to fasten
their safety belts, unless the driver’s safety belt is
already buckled.
The safety belt light will
also come on and stay on
until the driver’s belt is
buckled.
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Engine Coolant Temperature Gage
This gage shows the engine coolant temperature. If the
gage pointer moves into the shaded area, your
engine is too hot.
This means that your engine coolant has overheated. If
you have been operating your vehicle under normal
driving conditions, you should pull off the road, stop your
vehicle and turn off the engine as soon as possible.
(The larger tic marks are in increments of 30° below
220°F (104°C) and in increments of 10° above
220°F (104°C).)
SeeEngine Overheating on page 5-26for more
information.
Malfunction Indicator Lamp
Check Engine Light
Your vehicle is equipped
with a computer which
monitors operation of the
fuel, ignition and emission
control systems.
This system is called OBD II (On-Board
Diagnostics-Second Generation) and is intended to
assure that emissions are at acceptable levels for the
life of the vehicle, helping to produce a cleaner
environment. The CHECK ENGINE light comes on to
indicate that there is a problem and service is required.
Malfunctions often will be indicated by the system
before any problem is apparent. This may prevent more
serious damage to your vehicle. This system is also
designed to assist your service technician in correctly
diagnosing any malfunction.
Notice:If you keep driving your vehicle with this
light on, after a while, your emission controls
may not work as well, your fuel economy may not
be as good and your engine may not run as
smoothly. This could lead to costly repairs that may
not be covered by your warranty. United States
Canada
3-41

Notice:Modications made to the engine,
transmission, exhaust, intake or fuel system of your
vehicle or the replacement of the original tires
with other than those of the same Tire Performance
Criteria (TPC) can affect your vehicle’s emission
controls and may cause this light to come on.
Modications to these systems could lead to costly
repairs not covered by your warranty. This may
also result in a failure to pass a required Emission
Inspection/Maintenance test.
This light should come on, as a check to show you it is
working, when the ignition is on and the engine is
not running. If the light does not come on, have it
repaired. This light will also come on during a
malfunction in one of two ways:
•Light Flashing— A misfire condition has been
detected. A misfire increases vehicle emissions
and may damage the emission control system on
your vehicle. Diagnosis and service may be
required.
•Light On Steady— An emission control system
malfunction has been detected on your vehicle.
Diagnosis and service may be required.
If the Light Is Flashing
The following may prevent more serious damage to
your vehicle:
•Reducing vehicle speed.
•Avoiding hard accelerations.
•Avoiding steep uphill grades.
If the light stops flashing and remains on steady, see “If
the Light Is On Steady” following.
If the light continues to flash, when it is safe to do so,
stop the vehicle.Find a safe place to park your vehicle.
Turn the key off, wait at least 10 seconds and restart
the engine. If the light remains on steady, see “If
the Light Is On Steady” following. If the light is still
flashing, follow the previous steps, and see your dealer
for service as soon as possible.
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If the Light Is On Steady
You also may be able to correct the emission system
malfunction by considering the following:
Did you recently put fuel into your vehicle?
If so, reinstall the fuel cap, making sure to fully install
the cap. SeeFilling Your Tank on page 5-7. The
diagnostic system can determine if the fuel cap has
been left off or improperly installed. A loose or missing
fuel cap will allow fuel to evaporate into the atmosphere.
A few driving trips with the cap properly installed
should turn the light off.
Did you just drive through a deep puddle of water?
If so, your electrical system may be wet. The condition
will usually be corrected when the electrical system
dries out. A few driving trips should turn the light off.Have you recently changed brands of fuel?
If so, be sure to fuel your vehicle with quality fuel. See
Gasoline Octane on page 5-5. Poor fuel quality will
cause your engine not to run as efficiently as designed.
You may notice this as stalling after start-up, stalling
when you put the vehicle into gear, misfiring, hesitation
on acceleration or stumbling on acceleration. (These
conditions may go away once the engine is warmed up.)
This will be detected by the system and cause the
light to turn on.
If you experience one or more of these conditions,
change the fuel brand you use. It will require at least
one full tank of the proper fuel to turn the light off.
If none of the above steps have made the light turn off,
your dealer can check the vehicle. Your dealer has
the proper test equipment and diagnostic tools to fix any
mechanical or electrical problems that may have
developed.
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