2002 Cadillac DeVille Owner's Manual - Page 212

Ventilation Tips D Keep the hood and front air inlet free of ice, snow or any other obstruction (such as leaves). The heater and defroster will work far better, reducing the chance of fogging the inside of the windows. objects. This helps circulate air throughout your vehicle. HVAC Steering Wheel Controls (If Equipped) Some heating and cooling controls can be adjusted at the steering wheel. Other touch controls operate some audio controls. See "Audio Steering Wheel Controls" in the Index. D Keep the air path under the front seats clear of Passenger Compartment Air Filter Passenger compartment air, both outside air and recirculated air, is routed through a passenger compartment filter. The filter removes certain contaminants from the air, including pollen and dust particles. Reductions in airflow, which may occur more quickly in dusty areas, indicate that the filter needs to be replaced early. The filter should be replaced as part of routine scheduled maintenance. See "Passenger Compartment Air Filter" in the Index for more information on replacement. See "Maintenance Schedule" in the Index for replacement intervals. Your vehicle will not be damaged if you choose not to replace the filter once the old one is removed. ∧ TEMP ∨ (Temperature): Press the up arrow on the control to increase the temperature and the down arrow to decrease temperature manually. ∧ ∨ (Fan): Press the up arrow on the control to increase the fan speed and the down arrow to decrease fan speed manually. 3-10