PAC BLUGM11 Bluetooth Kit Integration Module for Select 11-Bit GM LAN Vehicles Provides plug and play connection for EGO talk Bluetooth phone kit to GM 11-Bit LAN vehicles Can also be hardwired to provide power and audio connectivity with any Bluetooth kit that has a mute trigger and an audio output Plays BT phone audio through factory sound system (Bose, non-amplified) Automatically mutes factory radio when making/receiving a call lays hands free audio through both front speakers