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:

    Low Traction Mode
    If your vehicle has the Allison Transmission, or the Hydra-Matic 6-Speed Automatic Transmission, it has a Low Traction Mode that can assist in vehicle acceleration when road conditions are slippery, s ...

    Instrument Panel Illumination Control
    This control is located on the instrument panel, to the left of the steering column. (Instrument Panel Brightness): Turn clockwise or counterclockwise to brighten or dim the lights. ...

    Starting the Engine
    If the vehicle has a diesel engine, see the Duramax diesel supplement for more information. If the vehicle is a hybrid, see the hybrid supplement for more information. Notice: Do not try to shift to ...