2007 Chevrolet TrailBlazer Owner's Manual - Page 180
2007 Chevrolet TrailBlazer Manual
Page 180 highlights
Air Conditioning On hot days, open the windows long enough to let hot inside air escape. This reduces the time it takes for your vehicle to cool down. Then keep your windows closed for the air conditioner to work its best. If your vehicle has the manual system, for quick cool-down on very hot days, use the airflow from the panel outlets, press recirculation and air conditioning with the temperature control in the blue area. If this max air conditioning setting is used for long periods of time, the air in your vehicle may become too cold and dry. For normal cooling on hot days, use air conditioning without recirculation with the temperature control in the blue area. If your vehicle has the automatic system, press the AUTO button and the system will cool and dehumidify the air inside the vehicle. Also while in this mode, the system will maximize its performance by using recirculation as necessary. On cool, but sunny days, with the manual system or through manual operation of the automatic system, use bi-level to deliver warm air to the floor and cooler air to the instrument panel outlets. To warm or cool the air delivered, turn the temperature control to the desired setting. Heating If you have the manual system, on cold days use floor with the temperature lever in the red area. If you have the automatic system, press AUTO and adjust the temperature by turning the temperature knob clockwise or counterclockwise. You may also adjust the automatic system manually by pressing the MODE button and selecting floor. Again, adjust the temperature by turning the temperature knob clockwise or counterclockwise. With either system, outside air will be heated and sent through the floor outlets. The heater works best if you keep the windows closed while using it. Defogging and Defrosting On cool, humid days, use defog to keep the windshield and side windows clear. Use the FRONT defrost button to remove fog or ice from the windshield quickly in extremely humid or cold conditions. If your vehicle has the manual system, select defog and adjust the fan speed to your comfort level. Turn the air conditioning on to help dehumidify the air. Use front defrost with the temperature toward the red area and the fan control toward high. 3-8