Axxess GMOS-MOST-02 Gm Amplifier Retention Interface 2014-Up Chevrolet vehiclesAxxess GMOS MOST 02 Gm Amplifier Retention Interface 2014 Up DESCRIPTION You want to upgrade the stereo in your 2014 up Chevrolet, but you don't want to lose important factory features. Axxess' GMOS MOST 02 interface retains your factory Bluetooth OnStar, along with your vehicle's factory MOST 25 amplifier. It lets you keep your factory backup camera, aux input, warning chimes, and retained accessory power (R. A. P.). It also provides the navigation