2005 CHEVROLET CORVETTE air conditioning

If the airow seems low when the fan speed is at the
highest setting, the passenger compartment air lter may
need to be replaced. For more information, see
Passenger Compartment Air Filter on page 3-31and
Scheduled Maintenance on page 6-4.
?(Recirculation):Press this button to turn the
recirculation mode on or off. When the climate control
system is in recirculation mode an indicator light
will come on. This mode prevents outside air from
entering your vehicle. It can be used to prevent outside
air and odors from entering your vehicle and to help
cool the air inside your vehicle more quickly.
Recirculation mode is not available in defrost or
defog mode.
^(Air Conditioning Off):Press this button to turn
the air conditioning compressor off. Press AUTO
to return to automatic operation. When in AUTO, the air
conditioning compressor will come on automatically,
as needed.
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 press the AUTO
button and adjust the temperature to a cool, comfortable
setting. To achieve maximum cool down, do the
following:
1. Select the vent mode.
2. Select recirculation mode.
3. Select the A/C on.
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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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 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 10 mph (16 km/h)
ve minutes.
The vehicle’s speed is above 32 mph (52 km/h) for
two and a half minutes.
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.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
and 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 oor/defog mode to
clear the windows of fog or moisture and warm
the passengers. Use defrost to remove fog or frost from
the windshield more quickly. To prevent fogging on
the inside of the windows in modes other than
oor/defog and defrost, make sure the air conditioning
compressor is on and recirculation mode is off.
Press the mode button until the defog mode appears on
the display.
-(Floor/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. The recirculation
mode cannot be selected while in the defog mode.
3-29

1(Defrost):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. Recirculation
cannot be selected while in the defrost mode. Pressing
this button again will return the system to the last
operating mode.
For severe ice conditions, turn the driver’s temperature
knob to 90°F (32°C) while in defrost mode.
Do not drive the vehicle until all the 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.
=(Rear Window Defogger):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 turn off about 10 minutes
after the button is pressed when traveling less than
30 mph (48 km/h). If turned on again, the defogger will
only run for about ve 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.
If your vehicle is equipped with the power convertible
top, the rear window defogger and heated mirrors
are automatically disabled when the power convertible
top is moving or down.
Notice:Do not use anything sharp on the inside of
the rear window. If you do, you could cut or
damage the warming grid, and the repairs would not
be covered by your warranty. Do not attach a
temporary vehicle license, tape, a decal or anything
similar to the defogger grid.
3-30

ENGINE PROTECTION REDUCE ENGINE RPM:You
will hear multiple chimes when this message is
displayed. This message will remain displayed and
active until the issue is resolved.
If the engine oil temperature exceeds 320°F (160°C),
this message is displayed. You should check the engine
coolant temperature and engine oil level. If your
engine is too hot, seeEngine Overheating on page 5-24.
Your vehicle may need service, so see your GM dealer.
You can monitor the oil temperature with the gages
button on the DIC.
HEADLAMPS SUGGESTED:If it is dark enough
outside and the headlamps and Twilight
Sentinel
®controls are off, this message will display.
This message informs the driver that turning on
the exterior lamps is recommended. It has become dark
enough outside to require the headlamps and/or
other exterior lamps.
HIGH TIRE PRESSURE:To acknowledge the warning,
press the RESET button. After you press the RESET
button, a message will reappear 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 LEFT FRONT, RIGHT
FRONT, LEFT REAR or 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 the RESET button. 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. SeeExtended Mobility Tires on page 5-56and
Ination - Tire Pressure on page 5-58.
HOT ENGINE AIR CONDITIONING OFF:This
message displays when the engine coolant becomes
hotter than the normal operating temperature. To avoid
added strain on a hot engine, the air conditioning
compressor is automatically turned off. When the coolant
temperature returns to normal, the A/C operation will
automatically resume. You can continue to drive
your vehicle. If this message continues to appear, have
the system repaired by your GM dealer as soon as
possible to avoid compressor damage.
ICE POSSIBLE:This message displays when the
outside air temperature is cold enough to create icy
road conditions.
LOW FUEL:This message displays when the fuel tank
is less than 10 percent full and the display is turned
off. A multiple chime will also sound when this message
is displayed. SeeFuel Gage on page 3-48.
3-58

REDUCED ENGINE POWER:You will hear multiple
chimes when this message is displayed. To
acknowledge that you have read the message and to
remove it from the display, press the RESET button. The
message will reappear every ve minutes until this
condition changes.
If the Driver Information Center (DIC) displays the
REDUCED ENGINE POWER message and the CHECK
ENGINE light comes on, a noticeable reduction in the
vehicle’s performance may occur. If the REDUCED
ENGINE POWER message is displayed but there is no
reduction in performance, proceed to your destination.
The performance may be reduced the next time
the vehicle is driven.
The vehicle may be driven at a reduced speed while the
REDUCED ENGINE POWER message is displayed,
but acceleration and speed may be reduced. Anytime
the CHECK ENGINE light stays on, the vehicle
should be taken to your GM dealer as soon as possible
for diagnosis and repair.
Also, seeMalfunction Indicator Lamp on page 3-42.If
the REDUCED ENGINE POWER message is displayed
in combination with the COOLANT OVER
TEMPERATURE message, seeEngine Overheating on
page 5-24.SERVICE ACTIVE HANDLING SYSTEM:If the
SERVICE ACTIVE HANDLING SYSTEM message is
displayed, there is a problem with your Active Handling
System and your vehicle needs service. See your
GM dealer. The instrument cluster light will also be on
and a chime will sound. When this message is
displayed, the system is not working. Adjust your driving
accordingly. SeeActive Handling System on page 4-10
for more information.
SERVICE AIR CONDITIONING:This message displays
when the electronic sensors that control the air
conditioning and heating systems are no longer working.
Have the climate control system serviced by your
GM dealer if you notice a drop in heating and air
conditioning efficiency.
SERVICE ANTILOCK BRAKES:If the SERVICE
ANTILOCK BRAKES message is displayed when you
are driving, stop as soon as possible and turn the
ignition off. Then start the engine again to reset the
system. If the message stays on, or comes back
on again while you are driving, your vehicle is in need
of service. See your GM dealer. If the anti-lock
brake system warning light is on and the regular brake
system warning light is not on, you still have brakes,
but do not have anti-lock brakes. If the regular
brake system light is also on, you do not have anti-lock
brakes and there is a problem with your brakes. See
Anti-Lock Brake System Warning Light on page 3-39
andBrake System Warning Light on page 3-38.
3-61

(D) Construction Code:A letter code is used to
indicate the type of ply construction in the tire. The letter
R means radial ply construction; the letter D means
diagonal or bias ply construction; and the letter B means
belted-bias ply construction.
(E) Rim Diameter:Diameter of the wheel in inches.
(F) Service Description:These characters represent
the load range and speed rating of the tire. The load
index represents the load carry capacity a tire is certied
to carry. The load index can range from 1 to 279. The
speed rating is the maximum speed a tire is certied
to carry a load. Speed ratings range from A to Z.
Tire Terminology and Denitions
Air Pressure:The amount of air inside the tire pressing
outward on each square inch of the tire. Air pressure
is expressed in pounds per square inch (psi) or
kilopascal (kPa).
Accessory Weight:This means the combined weight
of optional accessories. Some examples of optional
accessories are, automatic transmission, power steering,
power brakes, power windows, power seats, and air
conditioning.
Aspect Ratio:The relationship of a tire’s height to
its width.Belt:A rubber coated layer of cords that is located
between the plies and the tread. Cords may be made
from steel or other reinforcing materials.
Bead:The tire bead contains steel wires wrapped by
steel cords that hold the tire onto the rim.
Bias Ply Tire:A pneumatic tire in which the plies are
laid at alternate angles less than 90 degrees to the
centerline of the tread.
Cold Ination Pressure:The amount of air pressure in
a tire, measured in pounds per square inch (psi) or
kilopascals (kPa) before a tire has built up heat
from driving. SeeInation - Tire Pressure on page 5-58.
Curb Weight:This means the weight of a motor
vehicle with standard and optional equipment including
the maximum capacity of fuel, oil and coolant, but
without passengers and cargo.
DOT Markings:A code molded into the sidewall of a
tire signifying that the tire is in compliance with the U.S.
Department of Transportation (DOT) motor vehicle
safety standards. The DOT code includes the Tire
Identication Number (TIN), an alphanumeric designator
which can also identify the tire manufacturer, production
plant, brand and date of production.
GVWR:Gross Vehicle Weight Rating, seeLoading
Your Vehicle on page 4-31.
5-54

Fuses Usage
SPARE FUSE
HOLDERSpare Fuse Holder
SPARE FUSE
HOLDERSpare Fuse Holder
SPARE FUSE
HOLDERSpare Fuse Holder
SPARE FUSE
HOLDERSpare Fuse Holder
TPA Tonneau Pulldown Actuator
ONSTAR OnStar
®
DRIV DR SW Driver Door Switch
TELE SW/MEM
SEAT MODTelescope Switch, Memory Seat
Module
IGN SW/
INTR SENSIgnition Switch, Intrusion Sensor
REVERSE
LAMPReverse Lamp
REVERSE
LAMPSReverse Lamps
Blank Not Used
STOP LAMP Stop Lamp
BTSI SOL/
COL LOCKBrake Transmission Shift Interlock,
Column Lock
BLANK Not Used
Fuses Usage
RADIO/
S-BAND/VICSRadio, S-Band, VICS
REAR
FOG/ALDL/
TOP SWRear Fog Lamp, Assembly Line
Diagnostic Link Connector,
Convertible Top Switch
GMLAN
DEVICESGMLAN Devices
ISRVM/ HVACElectric Inside Rearview Mirror,
Heating Ventilation, Air Conditioning
CRUISE SW Cruise Control Switch
TONNEAU
RELSETonneau Release
RUN/CRANK Run/Crank Relay
HTD SEAT/
WPR RELAYSHeated Seat, Wiper Relays
ECM Engine Control Module
SDM PSIR SW
AIRBAGSDM/PSIR Switch (Airbag)
CLSTR/HUD Cluster, Heads-Up Display
HVAC/
PWR SNDHeating, Ventilation/Air Conditioning,
Power Sounder
SPARE Spare
DR LCK Door Locks
CTSY/LAMP Courtesy Lamp
BLANK Not Used
5-87

Fuse Usage
1Transmission Control
Module/Transmission
2 Horn, Alternator Sense
3 Anti-lock Brakes/Real Time Damping
4 Wiper
5 Stoplamps/Back-Up Lamps
6 02 Sensor
7 Battery Main 5
8 Park Lamps
9Powertrain Relay Input/Electronic
Throttle Control
10 Manual Transmission Solenoids
11Engine Control Module/Transmission
Control Module/Easy Key Module
12 Odd Numbered Fuel Injectors
13 Real Time Damping
14Canister Purge Solenoid, Mass Air
Flow Sensor
15 Air Conditioner Compressor
16 Even Numbered Fuel Injectors
17 Windshield WasherFuse Usage
18 Headlamp Washer
19 Right Low-Beam
20 Fuel Pump
21 Left Low-Beam
22 Front Fog Lamp
23 Right High-Beam
24 Left High-Beam
J-Style Fuses Usage
25 Cooling Fan
26 Battery Main 3
27 Anti-Lock Brake System
28Heating/Ventilation/Air Conditioning
Blower
29 Battery Main 2
30 Starter
31 Audio Amplier
32 Blank
33 Battery Main 1
5-90