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Bully Dog GT Tuner Unlock Cable 13-16 6.7L Ram Cummins

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Previous to the release of this simple to use cable, you were required to remove your PCM from the truck and send it in for modification in order to allow you to tune your Cummins, obviously leading to down time for your truck. This simple cable allows you to use a Bully Dog GT (PN: 40420) to tune your, and any other 2013+ Cummins that also has a GT Tuner. This is a one time use cable, thus once you've originally installed the tuner using the cable, your truck is now permanently unlocked, even if you are to return it to stock, so you can tune your buddy's truck or anyone else's (as long as they have their own GT Tuner).


  • Purchase a GT Diesel Tuner and the Cummins Unlock Cable
  • Install the GT Diesel Tuner and follow on-screen instructions
  • Install the Unlock Cable and follow on-screen instructions on the GT
  • Install Tuning from the GT Tuner

Bully Dog GT Tuner Unlock Cable 13-16 6.7L Ram Cummins fits the following vehicles:

  • 2013 Ram 2500
  • 2013 Ram 3500
  • 2014 Ram 2500
  • 2014 Ram 3500
  • 2015 Ram 2500
  • 2015 Ram 3500
  • 2016 Ram 2500
  • 2016 Ram 3500
  • 2017 Ram 2500
  • 2017 Ram 3500
  • 2018 Ram 2500
  • 2018 Ram 3500