Yes, navigating while music playing. Yes, support google maps online navigating.3G Modem not included, 3G universal Drive. Support external USB Dongle:WCDMA, EVDO, TD-SCDMA. Yes, can play stereo music through Bluetooth. Yes, can download phonebook from mobile to this unit. Yes, can use the first letter to search contact member in PB-Listings. Yes, Dialed Call, Received Call, Missed Call. Yes, you can connect a Bluetooth OBD2 Scanner Tool to use this function. Music /Radio Player on main menu. Yes, display a real player on main menu and can be controlled. 8 live wallpapers, 21 standard wallpapers, support DIY wallpaper from Gallery. Support JPS, BMP, PNG, GIF etc. The item "For GMC Sierra 1500 2500HD 3500HD Car Radio DVD Player GPS Navigation + FREE CAM" is in sale since Monday, December 18, 2017. This item is in the category "eBay Motors\Parts & Accessories\Car & Truck Parts\Interior\Dash Parts". The seller is "tizpo_auto" and is located in Dallas, Texas. This item can be shipped worldwide.