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Automatic Operation
AUTO 9(Automatic Fan): When this position is
selected on the fan control, the system adjusts the fan
speed. If the OnStar
®
system is activated when this
position is selected, the climate control fan speed
will lower.
AUTO (Automatic Mode):
1. Turn the fan control to the AUTO position.
2. Turn the mode control to the AUTO position.
3. Adjust the temperature to a comfortable setting
between 68°F (21°C) and 78°F (26°C).
Choosing the coldest or warmest temperature setting
will not cause the system to heat or cool any faster.
In cold weather, the system will start at reduced
fan speeds to avoid blowing cold air into the vehicle
until warmer air is available. The system starts 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 to warm the interior depends on the outside
temperature and temperature of the vehicle.
4. Wait 20 to 30 minutes for the system to stabilize
in order for the system to regulate automatically.
Then adjust the temperature as necessary to
find your comfort setting.
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 “Sensors” later
in this section.
After the vehicle is started, the display will show
the interior temperature settings and the outside
temperature.
Dual Climate Control System for Vehicles
with Rear Climate Control
3-41