2002 GMC Savana Van Owner's Manual - Page 142

Mode Knob The right knob changes the airflow setting. (Vent): This setting directs air through the instrument panel vents. (Bi-Level): This setting divides airflow between the heater floor vents and instrument panel vents. (Floor): This setting directs air through the floor vents. (Floor/Defog):This setting divides airflow between the heater floor vents and windshield. DEF (Defrost): This setting directs air through the windshield defroster vents. This setting is used to remove fog or ice from the windshield. Heater/Air Conditioning Controls (If Equipped) If your vehicle has air conditioning, your heater/air conditioning controls will look like this. Before using your vehicle's air conditioning, open the windows to clear the vehicle of hot air. 3-3