2003 CHEVROLET CORVETTE engine

Battery Run-Down Protection
Your vehicle has a feature to help prevent you from
draining the battery in case the underhood lamp, vanity
mirror lamps, cargo lamps, reading lamps, console
or glove box lamps are accidentally left on. If you leave
any of these lamps on, they will automatically timeout
after about 15 minutes. To reset it, all of the above
lamps must be turned off or the ignition key must be
in ON.
Head-Up Display (HUD)
{CAUTION:
If the HUD image is too bright, or too high in
your ®eld of view, it may take you more time to
see things you need to see when it's dark
outside. Be sure to keep the HUD image dim
and placed low in your ®eld of view.
If your vehicle is equipped with the Head-Up Display
(HUD), you can see some of the driver information that
appears on your instrument panel cluster.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 Icon
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The HUD controls are located to the left of the steering
wheel.To adjust the HUD so you can see it properly, do the
following:
1. Start your engine and slide the HUD dimmer control
all the way up.
The brightness of the HUD image is determined by
the light conditions in the direction your vehicle
is facing and where you have the HUD dimmer
control set. If you are facing a dark object or
a heavily shaded area, your HUD may anticipate
that you are entering a dark area and may begin
to dim.
It is possible for sunlight to enter the HUD causing
all of the graphics to light up. The display will
return to normal when the sunlight is no longer
entering the HUD.
2. Adjust the seat to a comfortable driving position. If
you change your seat position later, you may have
to re-adjust your HUD.
3. Press the top or bottom of the DISPLAY switch to
center the HUD image in your view.
The HUD image can only be adjusted up and down,
not side-to-side.
4. Slide the dimmer control downward until the HUD
image is no brighter than necessary.
To turn HUD off, slide the switch to OFF.
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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 recirculate 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.Sensors
The solar sensor on your vehicle monitors the solar
radiation and uses the information to maintain the
selected temperature when operating in AUTO mode by
initiating needed adjustments to the temperature, the
fan speed and the air delivery system. The system may
also supply cooler air to the side of the vehicle facing
the sun. The recirculation mode will also be activated, as
necessary. Do not cover the solar sensor located on
the top right side of the instrument panel near the
windshield or the system will not work properly.
There is also a sensor located behind the front bumper.
This sensor reads the outside air temperature and
helps to maintain the temperature inside the vehicle.
Any cover on the front of the vehicle could give a false
reading in the temperature.
If the outside temperature goes up, the displayed
temperature will not change until:
·The vehicle's speed is above 16 mph (26 km/h) for
one and a half minutes.
·The vehicle's speed is above 45 mph (72 km/h) for
one minute.
These delays prevent false readings. If the temperature
goes down, the outside temperature will be shown
when you start the vehicle. If it has been turned off for
less than three hours, the temperature will be recalled
from the previous vehicle operation.
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There is also an inside temperature sensor located to
the left of the ignition switch. The automatic climate
control system uses this sensor to receive information,
so if you block or cover it, the system will not function
properly.
Defogging and Defrosting
Fog on the inside of windows is a result of high humidity
(moisture) condensing on the cool window glass. This
can be minimized if the climate control system is
used properly. There are two modes to clear fog or frost
from your windshield. Use the defog mode to clear
the windows of fog or moisture and warm the
passengers. Use FRONT to remove fog or frost from
the windshield more quickly.
Press the MODE button until the defog mode appears
on the display.
-(Defog):This mode directs the air equally between
the windshield and the ¯oor outlets with a small
amount to the side window outlets. When you select this
mode, the system turns off recirculation and runs the
air-conditioning compressor unless the outside
temperature is at or below freezing. An indicator light in
the A/C button will come on to let you know that the
air-conditioning compressor is activated. The
recirculation mode cannot be selected while in the
defog mode.
1FRONT:Pressing this button directs most of the
air to the windshield, with a small amount directed to the
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. In this mode, the system will automatically
turn off the recirculation and run the air-conditioning
compressor, unless the outside temperature is at
or below freezing. An indicator light in the A/C button
will come on to let you know that the air-conditioning
compressor is activated. Recirculation cannot be
selected while in the defrost mode. Pressing this button
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 that was set prior to FRONT defrost
and the air intake mode will be in outside air. Do not
drive until all windows are clear.
Rear Window Defogger
The rear window defogger uses a warming grid to
remove fog or frost from the rear window.
The rear window defogger will only work when the
engine is running.
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=REAR:Press this button to turn the rear window
defogger on. Be sure to clear as much snow from
the rear window as possible. An indicator light in the
button will come on to let you know that the rear window
defogger is activated.
The rear window defogger will automatically turn off
approximately 15 minutes after the button is pressed. If
turned on again, the defogger will only run for
approximately seven minutes before turning off. The
defogger can also be turned off by pressing the button
again or by turning off the engine.
Your vehicle has heated outside rearview mirrors. The
mirrors will heat to help clear fog or frost from the
surface of the mirrors when the rear window defog
button is pressed.
Notice:Don't use anything sharp on the inside of
the rear window. If you do, you could cut or damage
the warming grid, and the repairs wouldn't be
covered by your warranty. Do not attach a temporary
vehicle license, tape, a decal or anything similar
to the defogger grid.
Outlet Adjustment
Use the tab located on the air outlets to change the
direction of the air¯ow.
Operation Tips
·
Clear away any ice, snow or leaves from the air
inlets at the base of the windshield that may
block the ¯ow of air into your vehicle.
·Use of non-GM approved hood de¯ectors may
adversely affect the performance of the system.
·Keep the area around the base of the instrument
panel console and air path under the seats clear
of objects to help circulate the air inside of
your vehicle more effectively.
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Warning Lights, Gages and
Indicators
This part describes the warning lights and gages that
may be on your vehicle. The pictures will help you
locate them.
Warning lights and gages can signal that something is
wrong before it becomes serious enough to cause
an expensive repair or replacement. Paying attention to
your warning lights and gages could also save you
or others from injury.
Warning lights come on when there may be or is a
problem with one of your vehicle's functions. As you will
see in the details on the next few pages, some
warning lights come on brie¯y when you start the
engine just to let you know they're working. If you are
familiar with this section, you should not be alarmed
when this happens.Gages can indicate when there may be or is a problem
with one of your vehicle's functions. Often gages
and warning lights work together to let you know when
there's a problem with your vehicle.
When one of the warning lights comes on and stays on
when you are driving, or when one of the gages
shows there may be a problem, check the section that
tells you what to do about it. Please follow this
manual's advice. Waiting to do repairs can be
costly Ð and even dangerous. So please get to know
your warning lights and gages. They're a big help.
Your vehicle may also have a Driver Information Center
that works along with the warning lights and gages.
See
Driver Information Center (DIC) on page 3-44.
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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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{CAUTION:
If the air bag readiness light ever comes on
when you have turned off the air bag, it means
that something may be wrong with the air bag
system. The passenger's air bag could in¯ate
even though the switch is off. If this ever
happens, don't let anyone whom the national
government has identi®ed as a member of a
passenger air bag risk group sit in the
passenger's position (for example, don't
secure a rear-facing child restraint in your
vehicle) until you have your vehicle serviced.
See ªAir Bag Off Switchº in the Index.
Voltmeter Gage
When the key is in ON
with the engine not
running, the voltmeter
shows the voltage output
of your battery. When
the engine is running, it
shows the voltage
output of the charging
system.
The reading will change as the rate of charge changes
(with engine speed, for example), but if the voltmeter
reads at 9 volts or below, your instrument panel cluster
and other systems may shut down. The Driver
Information Center (DIC) will read LOW VOLTAGE
when your vehicle is at 10 volts or below. Have
it checked right away. Driving with the voltmeter reading
at 10 volts or below could drain your battery and
disable your vehicle.
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