Filter
Top Products
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 21°C (68°F) and 26°C (78°F).
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 shows the
interior temperature settings and the outside
temperature.
If the AUTO position is selected on the fan or mode
control, the system automatically controls the air
conditioning compressor. The A/C compressor will
run automatically even at cool outside temperatures in
order to dehumidify the air. The A/C indicator light is lit
when the system is operating automatically, even at
near freezing outside temperatures. Press
# on the
fan control to turn off the A/C. For improved window
clearing performance in defog or defrost modes, the
A/C compressor runs automatically.
h (AUTO RECIRCULATION): If the AUTO position is
selected on either the fan or mode control, the system
automatically controls the air inlet to supply fresh
outside air or recirculate the interior air to cool the car
faster. The light on the recirculation button will come on
when the system changes to recirculation. Outside air
can be forced by pressing
h when the light is lit.
For vehicles without rear climate controls, press
: to
force outside air. The next time AUTO fan or mode is
selected, the air inlet will reset back to AUTO operation.
4-37