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:

    Driving with a Trailer
    Towing a trailer requires experience. Get familiar with handling and braking with the added trailer weight. The vehicle is now longer and not as responsive as the vehicle is by itself. Check ...

    Speedometer
    The speedometer shows the vehicle's speed in either kilometers per hour (km/h) or miles per hour (mph). ...

    Navigation
    OnStar navigation requires the Directions and Connections service plan. Push to receive directions or have them sent to the vehicle navigation screen. Destinations can also be forwarded to ...