Code PO733, vehicle will not move?

PO733 is basically saying that the TCM is seeing a difference between the input speed to the transmission and the expected output speed. In this case it is because you shift it into gear, but the truck doesn't move. It sounds like the internal clutches, or the oil pump have issues. What was it doing prior to replacing the solenoids? The same thing? If yes, then I would put a pressure gauge on it to see if it's the pump or converter causing the problem. If the pressures are correct but no motion then there are internal parts that have failed, with no engagement though it is more likely the pump.

Thanks so much for your help. I had a feeling in was probably gonna be internal and yes, it was doing the same before the solenoids were installed. I will take it to my transmission guy.

In that case it is almost guaranteed to be internal. Solenoids can cause odd shifting or harsh shifts if they are binding or not working but no motion at all is generally an internal issue. See what they say and see if there are any updates they can install if they rebuild yours. Thank you for using 2CarPros.