Chevrolet 2007 Corvette Owner's Manual page 180

Automatic Operation
AUTO (Automatic): Press the AUTO button to
place the entire system in the automatic mode.
When automatic operation is active, the system will
automatically control the inside temperature, the
air delivery mode, and the fan speed.
After a ten second display of the current settings,
the word AUTO, the driver's temperature setting
and the outside temperature will be shown. The
system will operate to achieve your comfort set
temperature as quickly as possible. The AUTO
control system works best with the windows up
and the removable roof installed or the convertible
top up.
1. Press the AUTO button.
2. Adjust the temperature to a comfortable
setting between 60°F (16°C) and 90°F (32°C).
Choosing the coldest or warmest temperature
setting will not cause the system to heat or
cool any faster. A setting of 73°F (23°C)
is suggested.
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In cold weather, the system will start at
reduced fan speeds to avoid blowing cold air
into your vehicle until warmer air is available.
The system will start out blowing air at
the floor but may change modes automatically
as the vehicle warms up to maintain the
chosen temperature setting. The length of
time needed for warm up will depend on the
outside temperature and the length of time
that has elapsed since your vehicle was
last driven.
3. Wait for the system to regulate. This may
take from 10 to 30 minutes. Then adjust
the temperature, if necessary.
Do not cover the solar sensor located in the
center of the instrument panel, near the
windshield. For more information on the solar
sensor, see "Sensor" later in this section.