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:

    Operation
    Radio with CD, Radio with CD/USB Similar Radio with CD, DVD, and USB Port The vehicle may have one of these radios as its audio system. ...

    Underbody Maintenance
    Use plain water to flush dirt and debris from the vehicle's underbody. Your dealer or an underbody car washing system can do this. If not removed, rust and corrosion can develop. ...

    Playing from a USB
    A USB mass storage device or Microsoft Transfer Protocal (MTP) device can be connected to the USB port. The USB port is in the center console. The USB icon displays when the USB device is connecte ...