2003 Cadillac DeVille Owner's Manual - Page 161

A @ V (Fan): Pressing this switch cancels automatic operation and places the system in manual mode. Press this switch to increase or decrease the fan speed. Press the MODE switch until AUTO is displayed to return to automatic operation. Passenger (hnpaflrnent Air Filter The Passenger compartment air filter traps most of the pollen from the air entering vehicle. your your Like vehicle's engine air cleaner/filter, itneed may to be changed periodically. For how often to change the passenger compartment air filter, seePart A: Scheduled Maintenance Services on page 6-4. A TEMP v (Temperature): Press this switch to increase or decrease the temperature for the rear seat passengers. For cool air to be sent to the rear of the vehicle, the air-conditioning system on the main climate-control panel must be on. If it is not on, then the temperature in the rear of the vehicle will remain at cabin temperature. Be sure to keep the area under the front seats clear of any objects so that the air inside of your vehicle can circulate effectively. The access panel for the passenger compartment air filter is located under the hood near the windshield, on the passenger's side of the vehicle. 3-36