Air Conditioning

A/C (Air Conditioning): Press to turn the air conditioning on or off. If the fan is turned off or the outside temperature falls below freezing, the air conditioning will not work.

the recirculation. An indicator light comes on. Air is recirculated inside the vehicle.(Recirculation): Press to turn on the recirculation. An indicator light comes on. Air is recirculated inside the vehicle. It helps to quickly cool the air inside the vehicle or prevent outside air and odors from entering. The air conditioning may come on under certain conditions.

To improve fuel efficiency and to cool the vehicle faster, recirculation may be automatically selected in warm weather. The recirculation light will not come on. To override this feature, select outside air.

outside air. An indicator light comes on. Outside air is circulated throughout the(Outside Air): Press to turn on the outside air. An indicator light comes on. Outside air is circulated throughout the vehicle.

    See also:

    How to Check Lubricant
    2500HD with 6.0 L All Other Series and Engines To get an accurate reading, the vehicle should be on a level surface. • For all 4.3 L, 4.8 L and 5.3 L 1500 Series applications, the proper leve ...

    All Terrain chassis and suspension
    Based on the chassis of the 2011 Sierra HD trucks, the All Terrain HD features a fully boxed steel frame with exceptional strength and torsional stiffness. It incorporates the production models' n ...

    English and Metric Unit Conversion
    To change the display units between English and metric units, see Driver Information Center (DIC) on page 5‑23 for more information. ...