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    Ejecting a CD (Six-Disc CD Player)
    EJECT : Press and release to eject the disc that is currently playing. Remove the CD when Remove Disc displays. If the disc is not removed, after several seconds the disc is automatically pulled back ...

    Under the Hood
    GM's two-mode hybrid system enables "full" hybrid operation with the capability to cruise on electric power up to 30 mph. The gas engine kicks in if more acceleration is needed, as well ...

    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. ...