My 2500 is stallin from reverse to drive. i come to a complete stop, switch to drive and it cuts off. the truck just had an engine swap 6000 miles ago. anyone know why this is? i just put a new tranny pan on, new filter and did a fluid swap. the tranny fluid is sittin at full, not over.

 

Try this thread
https://dodgeforum.com/m_617391/tm.htm
I have/had the problem. I haven't had it lately, but I never did anything to correct the issue.

 

appreciate it!