Special Application Services

○ Severe Commercial Use Vehicles Only: Lubricate chassis components every 5 000 km/ 3,000 mi.
○ Have underbody flushing service performed once a year.

    See also:

    Trailer Towing
    Three important considerations have to do with weight: • The weight of the trailer • The weight of the trailer tongue • The total weight on the vehicle's tires ...

    Shifting In or Out of Neutral
    1. With the vehicle running and the engine at an idle, set the parking brake. 2. Place the transmission into N (Neutral). Shift the transfer case in one continuous motion into or out of the N (Neutr ...

    Trailer Towing
    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. Do not tow a trailer during br ...