1996 GMC Safari Owner's Manual - Page 126

Fan Knob This control has four positions. To increase airflow, turn the knob toward HI. To decrease airflow, move it toward LO. + This setting brings in outside air BI-LEVEL: ' through the heater floor vent and the instrument panel vents. If you move the temperature knob between hot and cold, coolerair will come out of the upper vents while warmer air comes out of the floor vent. The air conditioning compressor may operate in this setting to cool the air. +. Temperature Knob This knob is next to the fan knob. It selects the temperature of the air flowing into your vehicle. Move the knob clockwise for warmer air. Move the knob counterclockwise for cooler air. Function Knob This knob is next to the temperature knob. VENT The air comes out at the vents on your instrument panel. The air conditioning compressor will not run in this position. Adjust the temperature knob for warmer or cooler air. # +. W O +H0 HEATER: Most of the air comes out near the floor. The rest comes out from the defroster vents under the windshield and at the front side windows. OFF: This setting turns the system off. MAX A/C: This cools the air the fastest, by recirculating the inside air. Move the temperature knob all the way clockwise. A/C: This setting brings in outside air and cools it. '4 BLEND: With this setting, the heated outside air comes out both the heater vents and defroster vents. Adjust the temperature knob for warmer or cooler air. DEFROST This setting operates the defroster. Most of the air comes out near the windshield, with some going t o the floor vents and front side windows. 3-2