1993 CHEVROLET CORVETTE Owners Manual

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Y301 ! I
CZimate Coratrol
The air conditioner and heater work
best if you keep your windows closed
while
using them. Your vehicle also has
the flow-through ventilation system
described
later in this section.
OFF: Press this button to turn the
system
off. Press any function button to
turn the system on.
Temperature Control Lever: This lever
regulates the
temperature of the air
coming through the system.
Fan: The two fan buttons allow you to
select the force of air you want.
Press r3f to lower the fan speed, or
A to raise it.
Air Condifioning
On very hot days, open the windows
long enough to let hot inside air escape.
Your
system has three air conditioning
settings:
& (Maximum A/C): Use for
maximum
cooling or quick cool-down
on very hot days.
This setting will not
operate when outside temperatures are
below
40°F (5°C).
-(Normal A/C) : Use for normal
’ caoling on hot days. This setting
brings in outside air, cools it, and
directs it through the instrument panel
outlets.
outside air,
cools it, and directs it in two
ways-through
the instrument panel
outlets, as well 9s-t.bough the heater
ducts.
(Bi-Level): This setting brings in
For each air conditioning setting, adjust
the temperature control lever and fan
speed as desired.

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Heating and VentMion
In these settings, the air conditioner
compressor doesn't
run. Outside air
enters the vehicle as indicated. For each
setting, adjust the temperature control
lever and
-fan speed as desired.
flows through the instrument panel
outlets.
*A (Hwt): .In this setting, most air
flows through heater ducts near the
floor. Some
air will also flow through
the defroster vents.
If your vehicle has an engine block
heater and you use it during cold
weather,
0°F (-18°C) or lower, your
heating system will more quickly
provide ,heat
because the engine coolant
is already warmed. See the Index under
Engine Block Heater.
4
(Vent): In this setting, outside air
Defogging and Defrosting
YoUr vehicle has two settings for
clearing your windows. The-air
conditioner
compressor will run in both
of these settings to remove moisture
from the air when the temperature is
above freezing. For each setting, adjust
the temperature control
lever and fan
speed as desired.
(@ (Defrost): This setting directs
90% of the air through the windshield
defroster vents
and the side window
vents, and 10% though the floor heater
ducts.
To defrost the windshield, slide the
temperature control lever
to the far right,
press the (@ button, and adjust the
fan to the highest speed.
For rapid
defrosting,
90% of the air will be
directed to the windshield and side
window vents.

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Defogging and Defrosting (cow
Pressing these two buttons at the
same time
allows most air to
flow to the floor heater ducts, -2.
with some going to the windshield and
side window vents located in the
windshield pillars. Use this setting
to
warm passengers while keeping the
windshield clear.
I38
To quickly defog the side windows,
slide the temperature control lever
to
the far right, press the -2 button, and
adjust the fan to the highest speed. Aim
the side vents toward the
side windows.
For increased air flow from the side
vents, close the center
vents.
Pressing both the *A and
buttons at the same time will direct air
through both the defroster and heater
outlets.
Rear Window Defogger
(COUPE AND HARDTOP CONVERTIBLE)
The rear window defogger uses a
warming grid to remove fog from the
rear window.
It also warms the power
mirrors.
(Rear Window Defogger): Press
this button to turn the defogger on. The
defogger
will return to OFF
automatically after about 10 minutes of
use. You can
also turn the defogger off
by turning off the ignition or by pressing
the button again.
The rear window defogger operates only
when the engine is running.
c

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Do not attach a temporary vehicle
ficense across the defogger
grid .on the
rear window.
Power Mirror Defogger
(COW€RT/BLE WITHOUT HARDTOP)
4 (Power ,Mirror Defogger): Press
this buttqn to warm and defog the
power mirrors.
The power
mirror defugger will turn off
automatically after about 10 minutes .of
usei You can also turn the defogger off
by turning off the-ignition or by pressing
the
4 but'ton again.
The power mirror defogger operates
only-when the engine is running.
SpecMy Tieated Windshield
(ZR- 7)
Yolar ZR-1 windshield is specially
treated
to reduce the amount of solar
heat entering your vehicle. This makes
it easier for your air conilitioning
system to keep you comfortable.
The specially treated windshield will
decrease the effective
distance of some
add-on electronic devices, such as
garage
door openers. If you use such a
device, aim it through the opening at
the bottom
center of the windshield.

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... I..
1. 140
Automutic Ekctronic
Climate Control (OPTION)
With this system, you can control the
ventilation, heating
and air conditioning
in your vehicle, or you can use the
automatic setting.
Your vehicle also has
the flow-through ventilation system
described later
in this section.
The digital screen displays the outside
temperature, the inside temperature
setting, and the fan speed.
If the inside
temperature is changed,
or if the system
is changed from
OFF to any mode, the
inside temperature setting will be
displayed for several seconds before the
outside temperature is again displayed.
The
air conditioner compressor operates
in all air conditioning positions, and in
(@ (Defrost) when the outside
temperature is above freezing.
When
the air conditioner is on, you may
sometimes notice slight changes in your
vehicle's engine speed and power. This
is normal, because the Automatic
EIectronic Climate Control system
is
designed to cycle the compressor on
and off to keep the desired cooling and
to
help your vehicle's fuel economy.
TEMP SET: This control sets the
interior temperature you want. Press
V to lower the inside temperature
setting; press
A to raise the setting.
The temperature
you set will be
displayed on the digital screen.
Once you set the temperature you want,
the system will try to maintain this temperature,
whether
you are using the
heating
or the cooling controls.
However, if you set the temperature for
60°F (16°C) or 90°F (3Z°C), the fan will
stay on 3p udess you select a
different speed.
Your Automatic Electronic Climate
Control system
has three sensors. The
sun load sensor on top of the dashboard
detects increased interior temperature
caused by sunlight.
To keep you
comfortable, it reduces the interior
temperature
by as much as 5°F (3°C)
below the setting on the digital screen.
The outside air temperature sensor,
located on the right
side of the upper
radiator support
in the grille opening,
reads the outside temperature.
This is
what you usually see on the display.

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The outside ternperatufe sensor reading
is filtered (to minimize false readings)
as follows:
If- the outside temperature decreases,
the -&splayed temperature
will update
immediately.
I€- the outside temperature increases
(such as when stopped in traffic), the
displayed temperature will not update
until one
of the following eonditiom
is met:
Vehicle speed is above 25 mph
Vehicle speed 'is above 45 mph
Updates will occur continuously as long
as the vehicle speed remains above
25 mph (40 Wh).
zf the ignition is turned off for more
than three hours, the current outside air
tempepature when the vehicle is restarted
will be stored in the system immediately.
The third sensor
is the in-vehicle
tempefature sensor, located
in-the
center air outlet on the passenger side.
If you block or cover either interior
sensor, the sensor
will give your system
a false reading.
(40 ,nn/h) for at least 3 minutes, or
(72 krn/h) for 1% minutes.
AUTO (Automatic): This system
autmnatically
adjusts to the
temperature range you select.
rt stays
at. this temperature
with the least
possible noise level
and it will select
the best mode (Heater,
Air
Conditioning or Bi-Level) and fm
speed to keep you comfortable. The
fan blower
will vary its speed
automatically unless you ovenide
it
with theVqrAbutton,
1 .I Set the temperature you want with
2. Press AUTO. An indicator light will
3. Press A (Vent) to allow outside. air
the
TEMP SET switch.
glow above
this.hutton.
to
flaw into the vehicle.
d

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Automutic Electrunic
Climate Cuntvul (C0nt.j
Use These Settings to Set Your Fan
Speed
V (Lqw.Ean): 'This. setting overrides.
the automatic fan speed. To decrease
fan speed, press the
V button and
hold until
you see the fan speed you
want.
AUTO # (Automatic Fan): when
you use this setting, the controller
chooses the fan speed based on the
input signals.
In the AUTO mode
during hot weather (after the vehicle
has not been running for a period of
time) the-fan speed will be
low when
the vehicle is initially
started. This
I42
initial low fan speed is used to purge
the vehicle of hot interior air. In the
AUTO 3f mode during cold weather,
the
fan speed will be delayed. in the
heat
mode until the engine coolant
reaches
an adequate temperature to
provide heat.
A (High .Fan) : This setting overrides
the automatic fan speed. To increase
fan speed, press the A button and
hold until you see the fan speed you
want. There is no €an blower delay.
Fan speeds wil1 range from 1 (lowest
setting)
to 10 (highest setting). When
any fan speed is selected, it will appear
on the digital screen briefly and the
ot~tside temperature will also appear.
Air Conditioning System
If a light above a button flashes when
you turn
on the ignition, it may indicate
an electrical problem with your air
conditioning system. The flashing will
continue for one minute, then go but. It
means you should have your system
checked
and serviced if needed.
It may
also mean the rekigerant level is
too low in your air conditioner system.
The. light will still flash after rebigerant
is added. This means your system will
not cool the air until it is reset.

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To Reset Your System:
1. Turn your ignition.lrey to Off or
Lock.
2. Pull the Courtesy Lights Fuse and
Radio Fuse .out of the- main fuse
panel for
one minute.
3. Put-the fuses back in and start your
vehicle. Your system shuuld be
working.
If you still have a problem,
see your deder,
.For
fuse location, see the Index under
Fuses E. CircuitBreakers and Fuse
.Panel.
Directional Controls
When the €allowing buttons are pressed,
an indicator light.
will glow above .the
button and the fan speed will go to
AUTO 3f unless you select a dBerent
speed. When the system is'changed
€rum
OFF tu any mode, the inside
temperature setting is displayed for
several seconds before the .outside
temperature is again displayed.
& (Maximum A/C): Use for
maximum cooling
or quick cool-down
on very hot days..
This setting will not
operate when outside temperatures are
below
40°F (5°C) I
-2 (Bi-Level): This setting lets air
inte the vehicle only through the
.heater and air conditioner outlets and
brings.the temperature
to the range
you choose. It controls the fan blower
speed by using t-he input signals.
Bi-Level al.so
defogs the side windows,
You can. override the,fan blower speed
by using
the V and A buttons.
a(Vent): In this setting, the
compressor
will not. mn. The-system
will adju-st
to the temperature you
choose, but it cannot cool the vehicle
to a temperature colder than the
outside air temperature, This setting