Buick 2007 Rainier Owner's Manual page 171

Driver's Side Temperature Knob: Turn this knob
clockwise or counterclockwise to manually raise or
lower the temperature on the driver's side of the
vehicle. The display will show the temperature
setting decreasing or increasing and an arrow
pointing toward the driver. This knob can also
adjust the passenger's side temperature setting
simultaneously if the two zones are linked as
described in Passenger's Side Temperature Knob.
Passenger's Side Temperature Knob: Turn this
knob clockwise or counterclockwise to manually
raise or lower the temperature on the passenger's
side of the vehicle. The display will show the
temperature setting decreasing or increasing and
an arrow pointing toward the passenger. The
passenger's temperature setting can be set
to match and link to the driver's temperature
setting by pressing and holding the AUTO button
for three seconds. Now, by adjusting the
driver's side temperature setting, the passenger's
side temperature setting will follow and both
arrows will appear on the display. The passenger's
side temperature setting also resets and relinks
to the driver's side temperature setting if the
vehicle has been off for more than three hours.
Automatic Operation
AUTO (Automatic): When automatic operation
is active, the system will control the inside
temperature, the air delivery mode, and the
fan speed.
Use the steps below to place the entire system in
automatic mode:
1. Press the AUTO button.
When AUTO is selected, the air conditioning
operation and air inlet mode will be
automatically controlled. The air conditioning
compressor will run when the outside
temperature is over approximately 40°F (4°C).
The air inlet will normally be set to outside
air. If it's hot outside, the air inlet will
automatically switch to recirculate inside air to
help quickly cool down your vehicle.
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