2001 Pontiac Grand Prix Owner's Manual - Page 167

Mode Knob The knob on the right side of the climate control panel has several settings to adjust the direction of the airflow: MAX: This setting recirculates much of the air inside your vehicle and sends it through the instrument panel outlets. The air conditioning compressor will run automatically in this setting unless the outside temperature is below 38_F (3.3_C). (Even when the compressor is running, you can control the temperature.) UPPER: This setting brings in outside air and directs it through the instrument panel outlets. BI-LEVEL: This setting brings in outside air and directs it two ways. Half of the air is directed through the instrument panel outlets. Most of the remaining air is directed through the floor ducts and a small amount to the defrost and side window vents. FLOOR: This setting sends most of the air through the ducts near the floor. The remaining airflow comes out of the defroster and side window vents. DEFOG: This setting allows half of the air to go to the floor ducts and half to the defroster and side window vents. DEFROST: This setting directs most of the air through the defroster. Some of the air goes to the floor ducts and the side window vent. The air conditioning compressor will run automatically in this setting unless the outside temperature is below 38_F (3.3_C). Air Conditioning Compressor Button Press the A/C button to operate the air conditioning compressor. The indicator light above the button will glow when the button is pressed. You don't have to press the button to run the compressor in MAX or DEFROST because it will already be running in these modes. 3-3