Next time don't start your question on a year old thread.
How many miles on your truck, is the replacement new or used and what fault code numbers do you have?

 

I have no fault codes but I just had the trans replaced and it's doing the exact same thing wich is stalling out or slipping at or around 60 I just pulled the vss off it has some kind of brown stuff in it but it rattles when you shake it is that normal.

 

Hi,guys heres my problom my disco was throwing code 1884 #18 although it was driving ok could tell when it was downshifting it was a little roughin the meantime i just replaced radiator and cooling fan change oil.
It drove great for about two days then it slipped in all gears i can move it at about 3000 rpms.my Question is does the tcm have anything to do with this? any ideas?thanks