1988-1994 GMC Chevy Radio Receiver Box - Upgraded with iPod Aux Input - Warranty Professionally Remanufactured OEM Unit Modified to include Auxiliary Input on a pigtail for use with iPod, iPad, Android, Satellite Radio, mp3 Players and more! Compatible Part Numbers: GM 00999781, 00999783, 00999828, 12344441, 16208545, 00999672, 16138045, 16124901, 12340971, 16141375, 12341720, 12343457, 00999792, 16081135, 16124891, 12341728, 12340971, 12341717, 12341720, 12341728, 12343457, 12344441, 16046360, 16055070, 16071005, 16072800, 16081135, 16084253, 16084265, 16124891, 16124901, 16138045, 16141203, 16141375, 16147075, 16154445, 16156555, 16164325, 16169551, 16172115, 16208545, 999672, 999781, 999783, 999792, 999828, GM option code UM6 Receiver Box with Aux Input for vehicles not equipped with EQ Control. Live Technical Support from 1 Factory Radio