2002 Buick Regal Owner's Manual - Page 150

Comfort Controls Dual ComforTemp t Climate Control FAN: Turn the knob clockwise toward HI to increase fan speed and counterclockwise toward LO to decrease fan speed. The fan must be turned on for the air conditioning compressor to operate. If the airflow seems very low when the fan is adjusted to the highest setting regardless of the mode setting, your passenger compartment air filter may need to be replaced. See "Maintenance Schedule" or "Passenger Compartment Air Filter" in the Index. OFF: To turn off the fan, turn the knob all the way counterclockwise to off. DRIVER (Driver's Side Temperature): The lever on the left adjusts the air temperature on the driver's side outlets independent of the temperature set by the passenger. Slide the lever up to raise the temperature. Slide the lever down to lower the temperature. PASSENGER (Passenger's Side Temperature): The lever on the right adjusts the air temperature on the passenger's side independent of the temperature set by the driver. Slide the lever up to raise the temperature. Slide the lever down to lower the temperature. With this system, the driver and passenger can maintain separate temperatures in their seating areas. The system works best if you keep your windows closed while using it. 3-2