2003 CHEVROLET CORVETTE air conditioning

?(Recirculation):This mode keeps outside air
from coming in the vehicle. It can be used to prevent
outside air and odors from entering your vehicle or
to help cool the air inside your vehicle more quickly.
Press this button to turn the recirculation mode on or off.
When the button is pressed, an indicator light will
come on. The air-conditioning compressor also comes
on. The recirculation mode cannot be used with the
outside air mode.
When in the AUTO mode, the system automatically
selects recirculation to cool the vehicle's temperature.
By pressing this button, the system will lock into
recirculation mode. Any adjustment to the air intake
must then be made manually. Recirculation is not
available when using the defrost or defog mode because
outside air is needed to reduce moisture inside of the
vehicle.
Operating the system in the recirculation mode may
cause fogging of the vehicle's windows when the
weather is cold and damp. To clear the fog, switch the
system to either the defog or defrost mode and
increase the fan speed. To avoid re-fogging of the
windows, operate the system in the outside air mode.
Temperature Control:The DRIVER knob changes the
temperature on the driver's and passenger's side of
the vehicle. Turn the knob clockwise or counterclockwise
to manually increase or decrease the temperature
inside your vehicle. Whenever you turn this knob, thetemperature will be displayed for approximately ®ve
seconds along with the current fan speed and air
delivery mode.
The PASSENGER knob changes the temperature on
the passenger's side of the vehicle. When the knob is in
the 12 o'clock position, the passenger's temperature
is the same as the driver's. Turn the knob clockwise for
warmer air on the passenger's side or counterclockwise
for cooler air. If the driver-set temperature is set at
full cold 60ÉF (16ÉC) or full hot 90ÉF (32ÉC), turning the
PASSENGER knob has no effect because the system
is locked at a maximum setting.
#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
approximately 35ÉF to 40ÉF (2ÉC to 4ÉC). 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.
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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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Fuse Usage
5Anti-Lock Brakes, Selective Ride
Control
6 Fog Lamp
7 Blank
8 Headlamp Low-Beam Right
9 Headlamp High-Beam Right
10 Headlamp Low-Beam Left
11 Horn
12 Headlamp High-Beam Left
13 Fuel Pump
14 Cooling Fan ± Ignition 3
15 Oxygen Sensor
16 Powertrain Control Module
17 Throttle Control
18 Injector 2
19 Engine IgnitionFuse Usage
20 Blank
21 Blank
22 Injector 1
23 Powertrain Control Module
24 Air Conditioning
25 Blank
26 Blank
27 Spare
28 Spare
29 Spare
30 Spare
31 Spare
32 Spare
46 Cooling Fan 2
47 Blank
5-90

Capacities and Speci®cations
The following approximate capacities are given in English and metric conversions.
Please refer to
Part D: Recommended Fluids and Lubricants on page 6-14for more information.
Capacities and Speci®cations
ApplicationCapacities
English Metric
Air Conditioning Refrigerant R134a 1.75 lbs 0.79 kg
Automatic Transmission
Drain and Re®ll 5.0 quarts 4.7 L
Overhaul 10.8 quarts 10.2 L
Cooling System 12.6 quarts 11.9 L
Engine Oil with Filter 6.5 quarts 6.1 L
Fuel Tank 18.0 gallons 68.0 L
Manual Transmission (Overhaul) 4.1 quarts 3.8 L
Wheel Nut Torque 100 lb ft 140Y
All capacities are approximate. When adding, be sure to ®ll to the appropriate level, as recommended in this
manual. Recheck ¯uid level after ®lling
5-92

Fuel System Inspection
Inspect the complete fuel system for damage or leaks.
Engine Cooling System Inspection
Inspect the hoses and have them replaced if they
are cracked, swollen or deteriorated. Inspect all pipes,
®ttings and clamps; replace as needed. Clean the
outside of the radiator and air conditioning condenser.
To help ensure proper operation, a pressure test of
the cooling system and pressure cap is recommended
at least once a year.
Rear Axle Service
Check the gear lubricant level in the rear axle and add if
needed. SeeRear Axle on page 5-46. A ¯uid loss
may indicate a problem. Check the axle and repair it if
needed.
Brake System Inspection
Inspect the complete system. Inspect brake lines and
hoses for proper hook-up, binding, leaks, cracks,
cha®ng, etc. Inspect disc brake pads for wear and rotors
for surface condition. Inspect other brake parts,
including calipers, parking brake, etc. You may need to
have your brakes inspected more often if your driving
habits or conditions result in frequent braking.
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