Restyle Audio System for Sierra Fits GMC Sierra 2014+ without Bose factory system;10 system with audio, video, navigation & Bluetooth;WVGA High Resolution touch-screen;Custom bezel for Sierra has backlit hard keys for quick access to core functions;4-way swipe user interface;Control up to eight accessories from the screen with Optional Accessory Controller (Requires KAC-001);Built-In Navigation with 3D mapping for the US and Canada, voice-guided directions;Split screen displays map and music source;Input for optional rear view camera. Add an Alpine multi-view system and get four viewing options (KCX-C250MC / camera system sold separately);Retain factory controls steering wheel controls, and onscreen information with the iDatalink Maestro (included);Enhanced My Favorites feature;4 x 50 Watt High Power Amplifier;Three 4-Volt Pre-amp Outputs;2 AUX Inputs, 1 AUX Output;CD/DVD, AAC, MP3, DivX Playback;Bluetooth Calling & Audio Streaming;Android & iPhone Pandora Control;HD Radio w/iTunes Tagging;SiriusXM Ready with iPhone Compatible with Factory Control Compatible with Navigation with Bluetooth Compatible with Pandora Compatible with Android Compatible Alpine Alpine Restyle Audio System for Sierra - X110-SRA X110-SRA Audio & Multimedia Receivers