Potential Issues

Some OnStar services are disabled after five days. OnStar cannot perform Remote Door Unlock or Stolen Vehicle Assistance after the vehicle has been off continuously for five days. After five days, OnStar can contact Roadside Assistance and a locksmith to help gain access to the vehicle.

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    When the System Does Not Seem to Work Properly
    The following messages may be displayed on the DIC: SERVICE PARK ASSIST: If this message occurs, take the vehicle to your dealer to repair the system. PARK ASST BLOCKED SEE OWNERS MANUAL: This messa ...

    Tailgating Alert
    The red FCA display will stay continuously illuminated if the vehicle ahead remains much too close. ...

    Vehicle Overview
    GMC’s full-size van sells in fewer numbers than the similar Chevrolet Express but attracts a loyal clientele. Along with its full-size rivals from Dodge and Ford, the rear-drive truck-based van ...