PAC OS-2BOSE 2000-2007 GM Class II OnStar Interface Replaces Factory Radio In Gm(r) Subs & Trucks While Retaining OnStar(r) Plug & Playno Cutting Or Splicing Into Factory Plug Os-2/os2-bose Communicate Directly With The OnStar(r) Module To Prevent False triggering & Eliminating Unwanted Audio Noise Onboard Amp Will Drive Two 4w Speakers In Stereo Onstar interface for 20002005 Cadillac Bose vehicles replaces the factory radio while retaining Onstar. Replaces the factory radio while retaining Onstar functions, Splicing into factory plug Pacos2/Pacos2 Bose communicate directly with the onstar module to prevent false, Triggering and eliminating unwanted audio noise 2000-2005 Deville and Seville including DTS. All with or without Bose amplifier. 2000-2002 Eldorado, with or without Bose amplifier. Cadillac De Ville 2000 - 2005 Radio Replacement Cadillac El Dorado 2000 - 2002 Radio Replacement Cadillac Seville 2000 - 2004 Radio Replacement