AXGMLN-012 AXXESS GM LAN-29 Data Interface 2006-Up (Replaced GMOS-LAN-012)AXGMLN 012 AXXESS GM LAN 29 Data Interface 2006 Up (Replaced GMOS LAN 012) Product Features GM Factory Integration Interface OnStar & Chime Retention Module For 2006 up Select GM vehicles Designed to retain Onstar OE Satellite and warning chimes that are normally lost when OEM radio is removed Provides a 12 volt accessory output for aftermarket radio operation Mute parking brake vss or speed sense Reverse output to make installing an aftermarket