When you say it is slipping are you sure it isn't just the TC unlocking and locking?
These Dodges have a bad habit of doing that, and it is annoying but not extremely damaging to the trans. in the short run. If it is the TC unlocking and locking the feel will be different than the TC slipping. Also if it is the TC unlocking it will do it on any grade and when empty, full, towing etc. , while if it is the TC slipping it will tend to do it more on hills while towing or hauling heavier loads.
When a transmission goes bye-bye sometimes it is dramatic and "all or nothing" and sometimes you can limp along quite a ways. Guys have posted here about traveling hundreds of miles with really serious transmission damage--but the old 47RH or RE held together and got them to their destination. But if a shaft breaks or if the TC slips so much that it degrades and sends little bits of TC Clutch material all through the trans, that puts a stop to things right away.
50K is not a lot of miles on one of these trannys, unless you just got a bad one from the factory, or if you are heavily bombed. Also if it is still in warranty you might want to go that route if it goes out. What year is your truck? Also, if you fill out your "signature" we can all see what mods. you have and the other stuff about your truck.
If it were my truck with 50K, and the trans went out, I'd first go to the dealer and let them rebuild it, THEN I'd go to an ATS shop and get an ATS TC & VB!!
