OEM Engine Control Module ECU Buick Cadillac Chevrolet GMC 12669749 / 12668866

2012-16 Sierra 6.0L Engine computer 12643636 "Programmed to your VIN" ECM PCM

Engine Computer Programmed Plug&Play 2012 Chevy Silverado 12669749 AB7R 6.0L PCM

Engine Computer Programmed Plug&Play 2015 GMC Sierra 12669749 AB7R 6.0L PCM ECM

Engine Computer Programmed Plug&Play 2014 GMC Sierra 12669749 AB7R 6.0L PCM ECM

Engine Computer Programmed Plug&Play 2016 GMC Sierra 12669749 AB7R 6.0L PCM ECM

Engine Computer Programmed Plug&Play 2013 GMC Sierra 12669749 AB7R 6.0L PCM ECM

2012-16 Sierra 6.0L Engine computer 12668866 "Programmed to your VIN" ECM PCM