Get from here to there without stopping to ask for directions!Just like factory Nav, this fully integrated system utilizes a DVD map database and Global Positioning System (GPS) satellite technology.The system operates using “hard keys" located on the radio along with the touch-sensitive buttons on the 8-inch LCD screen.Follow the navigation directions visually or with voice-guided turn-by-turn commands.The screen also displays important trip data such as time and distance to destinations, and it can be set to automatically adjust for easier readability in day or night-time driving conditions.The system includes AM/FM/XM radio, 6-disc DVD changer, DVD-Audio/Video, CD, MP3 CD, and a phone feature (if the customer has a subscription for OnStar® personal calling).A separate slot for the Nav disc allows customers to listen to their music CDs/DVDs while using the navigation system.