New for 2011

The Sierra Hybrid gets GM's OnStar 9.0 telematics system that GM says provides better voice recognition. GM also said they have worked to cut down on the amount of wind noise occupants hear.

    See also:

    Voice Pass-Thru
    Voice pass-thru allows access to the voice recognition commands on the cell phone. See your cell phone manufacturer's user guide to see if the cell phone supports this feature. To access contacts sto ...

    Passenger Sensing System
    The passenger sensing system, if equipped, turns off the front outboard passenger frontal airbag under certain conditions. No other airbag is affected by the passenger sensing system. If the vehicle ...

    Cooling System
    2.4L L4 Engine A. Engine Cooling Fan (Out of View) B. Engine Coolant Surge Tank and Pressure Cap 3.0L V6 Engine A. Engine Cooling Fans (Out of View) B. Engine Coolant Surge Tank and Pressure ...