I have a Pre-EPA GDE Tune from a 2015 RAM 1500 EcoDiesel Outdoorsman, Regen message option 3.55, 4x4). I sold the truck and have the GDE ECM. Worked great and never had any issues.

You'll have to do the mods (injector codes) to make it work for your truck.

I'll ship at this price via USPS priority mail.