2002 GMC Envoy Owner's Manual - Page 177

Passenger's Side Temperature Lever The lever on the right side of the climate control panel is used to adjust the air temperature on the passenger's side, independent of the temperature set by the driver. Slide the lever upward to raise the temperature. Slide the lever downward to lower the temperature. This lever also adjusts the temperature to the rear seat outlets. Mode Knob The knob on the right side of the control panel has several settings to control the direction of airflow: (Panel): Selecting panel mode will deliver air to the instrument panel outlets. (Bi-Level): Selecting bi-level mode will deliver warmer air to the floor and cooler air to the instrument panel outlets. (Floor): Selecting floor mode will deliver air to the floor outlets and some air to the defroster and side window vents. (Defog): Selecting defog will deliver air to the floor, windshield outlets and side window vents. (Defrost): Selecting this setting directs most of the air through the defroster and side window vents. Some of the air also goes to the floor ducts. Mode Buttons (Recirculation): Press this button to limit the amount of outside air entering your vehicle. This is helpful when you are trying to limit odors entering your vehicle and for maximum air conditioning performance in hot weather. Recirculation cannot be used in floor, blend or defrost modes. An indicator on the button will light up, flash three times and turn off when recirculation is selected in these modes. While in the recirculation mode the windows may fog when the weather is cold and damp. To clear the fog, select either the blend or defrost mode and increase the fan speed. (Air Conditioning): Press this button to turn the air conditioning compressor on and off. The system will cool and dehumidify the air inside the vehicle when the air conditioning compressor is engaged. 3-3