Unlock the potential of your 2013-2014 Cummins with the Bully Dog 2013-2014 Cummins unlock cable for use with the Bully Dog GT Diesel. A 4 simple step process is all that is needed to download tuning and special features to your truck. Details:
Purchase a GT Diesel and the Cummins Unlock Cable part 42214.
Install the GT Diesel and follow on-screen instructions.
Install the Unlock Cable and follow on-screen instructions on the GT.