Had to do a 950 mile trip over the weekend, and about half the trip i was in 4high due to the blizzard conditions. Well on the way home i noticed when the torque converter would go to lock ussually around 45-50mph the truck would shake a little bit. after it was locked it would slip if i gave it some pedal to accelerate Rpms would move up faster than the truck would go forward. I had to pass 1 time from about 50mph and the truck down shifted but once it got into gear rpms went to 3300pms and bounced there like i was on the rev limiter. does this sound like a TC problem or more?

 

You didn't say if you were towing or not. Mine did the same thing after I
installed the Banks "Git Kit". Didn't really notice it until I hooked up my 5er
then the tach would outrun the speedometer under a load.

I would definitely have it checked by a good aftermarket PERFORMANCE
transmission shop who works on the 47RE. Unless you get lucky, the local
Dodge dealer won't be much help....unless you want another stocker trans.

 

Wasnt pulling anything, but had about 1000lbs in the bed