Metra Axxess AX-ADGM100 2000-Up GM Auto Detect Interface BRAND NEW!Axxess AX ADGM100 Keep your GM factory features You want to install a new car stereo in your 2000 up GM vehicle, but you don't want to lose useful factory functions. Thanks to the Axxess AX ADGM100 interface, you can upgrade to the higher sound quality of an aftermarket receiver while maintaining your factory installed separate satellite radio tuner, OnStar, Bluetooth, factory amplifier, and the Retained Accessory Power (RAP). In some vehicles, you