2004 Pontiac Grand Prix Owner's Manual - Page 133

Outlet Adjustment Rotate and turn the air outlets, located in the middle and at each outboard side of the instrument panel, to adjust the direction of the airflow. Operation Tips • Clear away any ice, snow or leaves from the air inlets at the base of the windshield that may block the flow of air into your vehicle. • Use of non-GM approved hood deflectors may adversely affect the performance of the system. • Keep the path under the front seats clear of objects to help circulate the air inside of your vehicle more effectively. • If the airflow seems low when the fan is at the highest setting, the passenger compartment air filter may need to be replaced. See "Passenger Compartment Air Filter" following, for more information on this filter. See Instrument Panel Overview on page 3-2 for additional information on location. Passenger Compartment Air Filter The passenger compartment air filter is located underneath the inlet grille, which is located under the passenger side windshield wiper arm. The filter traps most of the pollen from entering the climate control system. Similar to the engine's air filter, it may need to be changed periodically to insure system performance. See Part A: Scheduled Maintenance Services on page 6-4 for information on scheduled changes for this filter. 3-29