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.

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    Manual Seats
    To adjust the seat: 1. Lift the bar to unlock the seat. 2. Slide the seat to the desired position and release the bar. 3. Try to move the seat back and forth to be sure the seat is locked in pl ...

    Odometer
    The odometer shows how far the vehicle has been driven, in either kilometers or miles. This vehicle has a tamper-resistant odometer. If the vehicle needs a new odometer installed, the new one is set ...

    Battery Power Protection
    This feature helps prevent the battery from being drained, if the interior courtesy lamps or reading lamps are accidentally left on. If any of these lamps are left on, they automatically turn off aft ...