7-76 Infotainment SystemProblems with RouteGuidanceInappropriate route guidance mayoccur under one or more of thefollowing conditions:. You have not turned onto theroad indicated.. Route guidance may not beavailable when using automaticrerouting for the next right orleft turn.. The route may not be changedwhen using automatic rerouting.. There is no route guidance whenturning at an intersection.. Plural names of places may beannounced occasionally.. It may take a long time tooperate automatic reroutingduring high-speed driving.. Automatic rerouting may displaya route returning to the setstopover if you are heading for adestination without passingthrough a set stopover.. The route prohibits the entry of avehicle due to a regulation bytime or season or any otherregulation which may be given.. Some routes may not besearched.. The route to the destination maynot be shown if there are newroads, if roads have recentlychanged, or if certain roads arenot listed on the map DVD. SeeDatabase CoverageExplanations on page 7‑77To recalibrate the vehicle's positionon the map, see your dealer.If the System NeedsServiceIf the navigation system needsservice and the steps listed herehave been followed but there arestill problems, see your dealer forassistance.Map Data UpdatesThe navigation map database isstored on a compact flash card. It isusable only in this type of navigationsystem, and will not function in otherelectronic devices.The map in the vehicle was installedby the factory and is the mostup-to-date information available asthe vehicle was produced. This mapmay have to be updatedperiodically, provided that the mapinformation has changed. See yourdealer for service.Ordering Map Data UpdatesThe map database in the vehicle isthe most up-to-date informationavailable when the vehicle wasproduced. The map database isupdated periodically, provided thatthe map information has changed.United States and CanadaFor any questions about the systemor the update process, contact theGM Nav Disc Center toll-free phone
