Metra GMOS-12 GMOS Interface

GMOS Interface When replacing the Oem radio in select vehicles some features will be lost or not function. This radio data interface will retain those features and provide Nav outputs for multimedia radios. This interface is Designed for non-amplified models with OnStar/ and OE Bluetooth. Will work in select GENERAL MOTORS 2004-2005. Metras Advanced Digital Interfaces Allow You To Replace Factory Radio w/o Losing Factory Features Retains OnStar w/Adjustable Volume Output USB Update Interface Compatible Navigation Outputs Now Included