Oldsmobile 1999 Aurora - Manual (Page 151)

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Turn the control between the rear outlets up to direct air
through the upper outlets. Turn the control down to
direct air through the lower outlets. Adjust the direction
of airflow from side to side with the controls in
each outlet.
Ventilation Tips
D Keep the hood and front air inlet area between the
base of the windshield and the hood free of ice,
snow, or any other obstruction (such as leaves). The
defroster and heater will work far better, reducing
the chance of fogging the inside of your windows if
this area is clear.
D Keep the air path under the front seats clear of
objects. This helps air to circulate throughout
your vehicle.
Steering Wheel Controls for
Climate Control
Some heating and cooling
controls can be adjusted at
the steering wheel. Other
touch controls also operate
some audio controls. See
“Audio Steering Wheel
Controls” later in
this section.