• Some routes may not be searched.• The route to the destination may not be shown ifthere are new roads, if roads have recentlychanged, or if certain roads are not listed on themap DVD. See Ordering Map DVDs on page 4-56.To recalibrate the vehicle’s position on the map, seeyour dealer/retailer.If the System Needs ServiceIf your system needs service and you have followed thesteps listed here and still are experiencing problems,see your dealer/retailer for assistance.Ordering Map DVDsThe map DVD in your vehicle is the most up-to-dateinformation available when your vehicle was produced.The map DVD is updated periodically, provided thatthe map information has changed.If you have any questions about the operation of thenavigation system or the update process, contactthe GM Nav Disc Center toll-free phone number,1-877-NAV-DISC (1-877-628-3472) or go to the center’swebsite, gmnavdisc.com. If you need any updates or areplacement disc, because the current disc is lost,damaged, or needs to be updated, call the GM Nav DiscCenter or order a new disc online. To order a disc,have your Vehicle Identification Number (VIN) available.This helps the center make sure you receive thecorrect and most up-to-date DVD map disc for yourvehicle. See “Vehicle Identification Number (VIN)” in theIndex of your vehicle’s owner manual for moreinformation.After receiving the updated disc, replace the old disc inthe navigation system. See “Installing the DVD MapDisc” and “Ejecting the DVD Map Disc” under Maps onpage 4-14. Dispose of the old disc to avoid confusionabout which disc is the most current.Database Coverage ExplanationsCoverage area depends upon the map detail available.Some areas have greater map detail than others.The navigation system works only as well as theinformation provided on the map disc. See OrderingMap DVDs on page 4-56 on how to obtain updated mapinformation.4-56
