Retains Factory Rear Seat Entertainment System when Adding an Aftermarket Radio Compatible with 2006-2017 Buick, GMC, Chevrolet, Cadillac, Pontiac, Suzuki, Hummer, Saturn Provides Video Signal to Factory Overhead Video Monitors That Do Not Have The DVD Player Built In This harness must be used in conjunction with the Axxess GMOS-LAN-01, Axxess GMOS-LAN-02, or the Axxess GMOS-LAN-012 Radio Replacement Module