Cellular and GPS Antennas

Avoid placing items over or near the antenna to prevent blocking cellular and GPS signal reception. Cellular reception is required for OnStar to send remote signals to the vehicle.

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    Driving in Mud, Sand, Snow, or Ice
    Use a low gear when driving in mud – the deeper the mud, the lower the gear. Keep the vehicle moving to avoid getting stuck. Traction changes when driving on sand. On loose sand, such as on beaches ...

    Symbols
    The navigation system may have a feature that allows for viewing parking assist symbols on the navigation screen while using the RVC. The Ultrasonic Rear Park Assist (URPA) system must not be disabled ...

    Interior
    Base-model SL G1500 vans have vinyl high-back front buckets and a pair of rear bench seats for eight-passenger capacity. A dozen people fit into the G2500/3500 vans, seated on twin three-passenger ...