1999 CHEVROLET CORVETTE Owners Manual

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LOW TIRE PRESSURE: You will hear two chimes
when this message is displayed. To acknowledge the
warning, press RESET. After you press RESET, a
message will reappear and you will hear a chime 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. See ªExtended
Mobility Tiresº in the Index.
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.

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FLAT TIRE: You will hear two chimes when this
message is displayed followed by the message MAX
SPEED 55 MPH (90 km/h). If this message appears, do
not drive your vehicle above these limits. The next
message to appear is REDUCED HANDLING. Adjust
your driving accordingly. To acknowledge these
warnings, press RESET. After you press RESET, a
message will reappear and you will hear a chime every
10 minutes until this condition changes. This message
indicates that the pressure in one of your tires is lower
than 5 psi (34 kPa). Next to the FLAT TIRE 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 flat. 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. See
ªExtended Mobility Tiresº and ªTire Inflationº in
the Index.
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.

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HIGH TIRE PRESSURE - (LF, LR, RF, RR): Yo u
will hear two chimes when this message is displayed. To
acknowledge the warning, press RESET. After you press
RESET, a message will reappear and you will hear a
chime 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.
See ªExtended Mobility Tiresº and ªTire Inflationº
in the Index.SERVICE TIRE MON SYS: 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 approximately 10 minutes. If all four
sensors are missing, the warning will come on in
approximately 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.

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Other Messages
Here are more messages that you can receive on your
Driver Information Center (DIC). To acknowledge a
message and read another message that may have come
on at the same time, press the RESET button.

BRAKE BEFORE SHIFT (Automatic
Transmissions Only)

CHANGE OIL NOW (See ªEngine Oil Lifeº in
the Index.)

CHANGE OIL SOON (See ªEngine Oil Lifeº in
the Index.)

CRUISE DISENGAGED (See ªCruise Controlº in
the Index.)

CRUISE SET __ MPH (__ km/h) (See ªCruise
Controlº in the Index.)

DOOR AJAR
ENGINE PROTECTION REDUCE ENGINE RPM

TRUNK AJAR (Convertible/Hardtop)

HATCH AJAR (Coupe)

HIGH VOLTAGE

LOW BRAKE FLUID (See ªBrake Fluidº in
the Index.)

LOW FUEL (See ªFuel Gageº in the Index.)

LOW VOLTAGE

LOW WASHER FLUID

RESERVE FUEL

UPSHIFT NOW

3-
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Section 3 Comfort Controls and Audio Systems
In this section, you'll find out how to operate the comfort control and audio systems offered with your vehicle. Be
sure to read about the particular systems supplied with your vehicle.
3
-2 Comfort Controls
3
-2 Manual Comfort Controls
3
-4 Automatic Electronic Dual Climate Control
System (If Equipped)
3
-9 Sensors
3
-10 Air Conditioning
3
-11 Heating
3
-11 Defogging and Defrosting
3
-11 Rear Window Defogger
3
-12 Audio Systems
3
-13 Setting the Clock All Systems
3
-13 AM-FM Stereo with Cassette Tape Player and
Automatic Tone Control3
-18 AM-FM Stereo with Compact Disc Player and
Automatic Tone Control (If Equipped)
3
-23 Trunk-Mounted CD Changer (If Equipped)
3
-27 Theft-Deterrent Feature
3
-29 Understanding Radio Reception
3
-29 Tips About Your Audio System
3
-30 Care of Your Cassette Tape Player
3
-31 Care of Your Compact Discs
3
-31 Care of Your Compact Disc Player
3
-31 Fixed Mast Antenna
3
-31 Power Mast Antenna Care (If Equipped)
3
-32 Integrated Windshield and Rear Window
Antennas (If Equipped)

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Comfort Controls
This section tells you how to make your air system work
for you. Your comfort control system uses
ozone
-friendly R-134a refrigerant.
With these systems, you can control the heating, cooling
and ventilation in your vehicle. Your vehicle also has a
flow
-through ventilation system described later in
this section.
Manual Comfort Controls
Fan Knob
The left knob is the fan knob and controls the force of
air you want. Turn the knob clockwise to increase fan
speed or counterclockwise to decrease fan speed. The
fan must be turned on for the air conditioning
compressor to operate.
Temperature Knob
The center knob controls the temperature of the air
coming through the system. Turn it counterclockwise
(toward the blue area) for cooler air. Turn it clockwise
(toward the red area) for warmer air.
Mode Knob
The right knob selects the direction of where the air will
enter the vehicle.
UPPER: This setting directs most of the air through
the instrument panel outlets with a very small amount of
air directed to the lower outlets.
BI-LEVEL: This setting directs air into the
vehicle in two ways. Cooler air is directed toward your
upper body through the instrument panel outlets, while
warmer air is directed through the lower outlets.

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LOWER: This setting directs most of the air
through the lower ducts to the floor area of the vehicle
with some of the air also directed toward the windshield
and side window vents.
DEFOG: This setting divides the air between the
windshield and lower outlets with a small amount
directed toward the side window vents. This is useful
when fog appears on the windshield or side glass due to
rain or snowy conditions.
DEFROST: Use this setting to quickly remove fog
or frost from the windshield. This setting directs most of
the airflow to the windshield with a small amount
directed toward the lower and side window outlets.
Mode Buttons
These buttons control the air intake, the air conditioning
and the rear window defogger operation.
FRESH AIR: Press this button and it will bring
outside air into the vehicle. The light on the button will
come on when operating. Use this setting while trying to
defrost or defog windows to help clear moisture.
RECIRCULATE: Press this button to limit the
amount of fresh air entering the vehicle by recirculating
most of the air inside the vehicle. The light on the button
will come on when operating. This setting is helpful
when you are trying to cool the air quickly or to limit
odors entering the vehicle. RECIRCULATE cannot be
used while in the DEFROST or DEFOG modes.
A/C: This button turns the air conditioning
compressor off or on under most conditions. The light
on the A/C button comes on when the compressor is
operating. The air conditioning does not operate at
temperatures below approximately 35
F to 40
F
(2
C to 4
C). The air conditioning cools and
dehumidifies the air coming into the vehicle. The air
conditioning cannot be turned off in DEFROST, as it
helps to remove moisture from the vehicle. It also helps
to keep the windows clear.
The air conditioning may be forced off at high engine
speeds or high engine oil or coolant temperatures.
See ªRear Window Defoggerº later in this section for
more information.

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3-4 Automatic Electronic Dual Climate Control
System (If Equipped)
Your vehicle may be equipped with an Automatic
Electronic Dual Climate Control System. This system
can automatically adjust and control temperature output,
fan speed, air delivery mode, air conditioning operation
and air intake. You can use the AUTO (automatic)
setting or override the automatic operation with
manual control settings. The control settings will be
remembered each time you turn the ignition off
and restart in the same settings. You can use the
memory option to store and recall your settings.
(See ªMemoryº in the Index.)Digital Display
The digital display shows readings in Fahrenheit or
Celsius by pressing the E/M button (English/Metric) on
the Driver Information Center (DIC). When you start
the vehicle, the display will show the current fan speed,
air delivery mode and the driver
-set temperature for
approximately five seconds and then show the
outside temperature.
When the system is fully in the automatic mode, the
word AUTO will also appear on the display. If you have
selected a manual fan speed, then the fan symbol will
appear on the display. If a manual air delivery mode has
been selected, the delivery mode symbol will appear on
the display.
Driver Set Temperature Knob
The DRIVER knob changes the temperature on the
driver's and passenger's side of the vehicle. Turn the
knob clockwise to increase the temperature and
counterclockwise to decrease the temperature.
Whenever you turn this knob, the temperature will be
displayed for approximately five seconds along with the
current fan speed and air delivery mode.