2010 GMC Acadia Owner's Manual - Page 246

8-2 Climate Controls automatically selects outside air. Recirculation cannot be selected while in floor mode. Temperature Control: Turn clockwise or counterclockwise to increase or decrease the temperature of the air flowing from the system. Air Delivery Mode Control: Turn clockwise or counterclockwise to change the current airflow mode. By positioning the right knob between two modes, a combination of those two modes is selected. Air is directed to the instrument panel outlets. H (Vent): ) (Bi-Level): Air is divided between the instrument panel and floor outlets. Some air is directed towards the windshield and side window outlets. Cooler air is directed to the upper outlets and warmer air to the floor outlets. Air is directed to the floor outlets, with some of the air directed to the windshield, side window, and second row floor outlets. In this mode, the system - (Defog): This clears the windows of fog or moisture. Air is directed to the windshield, floor outlets, and side window vents. When this mode is selected, the system turns off recirculation and runs the air conditioning unless the outside temperature is less than 4°C (40°F). Recirculation cannot be selected while in the defog mode. Do not drive the vehicle until all the windows are clear. 0 (Defrost): This clears the windshield of fog or frost, more quickly. Air is directed to the windshield and side window vents, with some to the floor vents. In this mode, outside air is pulled inside the vehicle. Recirculation cannot be selected while in the defrost mode. The air conditioning system runs automatically in this setting, unless the outside temperature is less than 4°C (40°F). Do not drive the vehicle until all the windows are clear. # (Air Conditioning): Press to turn the air conditioning system on or off. An indicator light comes on when A/C is on. The air conditioning system does not operate when the outside temperature is below 4°C (40°F). The indicator light flashes three times and turns off when outside conditions affect air conditioning operation. This is normal. For quicker cool down on hot days: 1. Open the windows to let hot air escape. 2. Select 3. H mode. Select # . 4. Select the coolest temperature. 5. Select the highest fan speed. 6. Close the windows after the hot air has escaped. 7. Once the vehicle's interior temperature is below the outside temperature, select @ mode for faster cooling. 6 (Floor):