The map DVD in your vehicle is the most up-to-date information available when your vehicle was produced. The map DVD is updated periodically, provided that the map information has changed. You will receive two free DVD map disc updates with the purchase of your new vehicle. Updates are necessary to make sure that your vehicle's navigation system has the most accurate information available about streets/roads, points of interest, and business locations.

The updates are provided by the GM Nav Disc Center at the first and second anniversary dates of your vehicle's delivery date. About four to six weeks before those anniversary dates, you will receive a post card from the GM Nav Disc Center reminding you that a free update is available. The center will request confirmation of your mailing address either by having you contact the toll-free number, 1-877-NAV-DISC (1-877-628-3472), or the center's website, www.gmnavdisc.com. After verifying your address you should receive the updated disc in about two weeks. After receiving the updated disc, replace the old disc in the navigation system. See "Installing the DVD Map Disc" and "Ejecting the DVD Map Disc" under Maps . Dispose of the old disc to avoid confusion about which disc is the most current.

If you have any questions about the operation of the navigation system or the update process, call the GM Nav Disc Center or go to the center's website. If you need any future updates or a replacement disc, because the current disc is lost, damaged, or needs to be updated, call the GM Nav Disc Center 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 the correct and most up to date DVD map disc for your vehicle. See "Vehicle Identification Number (VIN)" in the Index of your vehicle's owner manual for more information.