11-14 Chevrolet GMC 2500HD DURAMAX 6.6 LML OEM ENGINE COMPUTER ECU ECM 12644941

Here we have a good used engine computer removed from a 2013 GMC 2500hd. This should fit the 11-14 trucks with the LML/allison 1000 drivetrain only. But please confirm fitment with your part number. This will require dealer programming.