All-Wheel Drive

Transfer Case

When to Check and Change Lubricant

The transfer case is filled with oil during manufacture, which then does not require changing. It is not necessary to regularly check the transfer case fluid unless there is a leak suspected or an unusual noise is heard. A fluid loss could indicate a problem. It is recommended to have the transfer case serviced at your dealer.

    See also:

    Special Application Services
    - Vehicles with manual transmissions: Every two years drain, flush, and fill clutch hydraulic system. - Severe Commercial Use Vehicles Only: Lubricate chassis components every 5 000 km/3, ...

    Turn-by-Turn
    This display is used for the OnStar or Navigation System Turn-by-Turn guidance. See OnStar Overview or the navigation manual, if the vehicle has navigation, for more information. ...

    Passing
    More passing distance is needed when towing a trailer. Because the rig is longer, it is necessary to go much farther beyond the passed vehicle before returning to the lane. ...