Chevrolet 2008 Model Vehicle User Manual


 
Automatic Operation
AUTO (Automatic): Select AUTO on both the fan
speed control and the air delivery mode control knobs to
activate the automatic system. When automatic
operation is active the system controls the inside
temperature and air delivery.
Use the steps below to place the entire system in
automatic mode:
1. Turn the fan knob and the mode knob to the AUTO
position.
The current set temperature displays. When AUTO
is selected, the air conditioning operation and air
inlet is automatically controlled. The air conditioning
compressor runs while the outside temperature is
over about 40°F (4°C). The air inlet will normally be
set to outside air. If it is hot outside, the air inlet
may automatically switch to recirculate inside air to
help quickly cool down the vehicle.
2. Set the temperature.
An initial setting of 73°F (23°C) is recommended.
Allow about 20 minutes for the system to regulate.
Press the up or down arrow temperature buttons
to adjust the temperature setting as necessary.
If the temperature is set at 60°F (15°C) the system
remains at the maximum cooling setting. If the
temperature is set at 90°F (32°C) the system
remains at the maximum heat setting. Choosing
either maximum setting does not cause the vehicle
to heat or cool any faster.
Be careful not to cover the sensor located on the
top of the instrument panel near the windshield.
This sensor regulates air temperature based on the
intensity of the sun.
Also do not cover the sensor grille on the lower
right side of the climate control faceplate, as
this regulates the inside temperature.
To avoid blowing cold air at engine start-up in cold
weather, the system delays turning on the fan
until warm air is available. The length of delay
depends on the engine coolant temperature.
Turning the fan knob overrides this delay and
changes the fan to the selected speed.
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