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 thecenter’s website, www.gmnavdisc.com. If you need anyupdates or a replacement disc, because the currentdisc is lost, damaged, or needs to be updated, call theGM Nav Disc Center or order a new disc online.To order a disc, have your Vehicle IdentificationNumber (VIN) available. This helps the center makesure you receive the correct and most up-to-date DVDmap disc for your vehicle. See Vehicle IdentificationNumber (VIN) on page 6-89 for more information.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 4-39. Dispose of the old disc to avoid confusionabout which disc is the most current.Database Coverage ExplanationsCoverage areas vary with respect to the level of mapdetail available for any given area. Some areas willfeature greater levels of detail than others. If thishappens, it does not mean there is a problem with thesystem. As the map DVD is updated, more detailmay become available for areas which previously hadlimited detail. See Ordering Map DVDs on page 4-53.4-53
