Engine Computer Programmed Plug&Play 2004 Buick Rainier 12577955 4.2L PCM ECM

Engine Computer Programmed Plug&Play 2003 Isuzu Ascender 19210065 4.2L PCM ECM

TrailBlazer 2003 - 2005 Engine Computer ECM PCM 12574976 4.2L Programmed to VIN

Engine Computer Programmed Plug&Play 2003 Oldsmobile Bravada 12577955 4.2L PCM

Engine Computer Programmed Plug&Play 2005 Isuzu Ascender 16255757 4.2L ECM PCM

Engine Computer Programmed Plug&Play 2005 Buick Rainier 12577955 4.2L PCM ECM

Engine Computer Programmed Plug&Play 2003 Isuzu Ascender 12574976 4.2L ECM PCM

Engine Computer Programmed Plug&Play 2005 GMC Envoy 12577955 4.2L PCM ECM ECU