All-Wheel Drive

It is not necessary to check the all-wheel drive lubricant levels.

A fluid leak is the only reason for fluid loss. If a leak occurs, take the vehicle to the dealer as soon as possible.

    See also:

    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. ...

    Power Steering Fluid
    See Engine Compartment Overview on page 10‑6 for reservoir location. ...

    Automatic Transmission
    The automatic transmission has a shift lever located on the console between the seats. P (Park): This position locks the front wheels. It is the best position to use when starting the engine becaus ...