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Home >> Buick >> 1999 >> Riviera V6-3.8L SC VIN 1 >> Repair and Diagnosis >> Heating and Air Conditioning >> Control Assembly >> Description and Operation >> Control Assembly Description >> Fan Speed
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Fan Speed

Use the fan speed dial in order to manually change the fan speed by turning the dial 1 increment in order to increase/decrease the fan speed.

If the system is operating under AUTO fan speed control, turning the dial stops the AUTO fan speed control and begins a manual fan speed control.

The fan speed remains constant, unless the driver changes the fan speed again.

When the system is in OFF mode, pressing the Mode button causes the system to turn on AUTO mode with AUTO fan speed control.
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