[MrLee11]

Hello everyone im new here and not sure if this has been talked about before but I have a 11 crew with the 5.7 hemi and and after the vehicle warms up when I go into another gear say reverse or park I hear and feel a thump sound from either the trans or transfer case area but not sure. It has 183k and motor mounts are good and trans mount. Carlot changed the transmission but still hearing it.

 

[Don Fox]

Mr Lee:
Have they looked at the rear drive shaft, and it's center bearing? At 183k, there could be many issues from normal wear and tear at that mileage.

Don

 

[MrLee11]

Mr Lee:
Have they looked at the rear drive shaft, and it's center bearing? At 183k, there could be many issues from normal wear and tear at that mileage.

Don

I doubt it they didn't do any diagnostic on the truck change what somebody told them but your the second person to mention driveshaft to me.

 

[NumberThree]

I doubt it they didn't do any diagnostic on the truck change what somebody told them but your the second person to mention driveshaft to me.

I'll be the third. Look for any 'play', or 'slop' at all in the drive shaft. In particular, the universal joints at the front and rear of it.
If no play is found there, it could be inside the rear end.

 

[MrLee11]

I'll be the third. Look for any 'play', or 'slop' at all in the drive shaft. In particular, the universal joints at the front and rear of it.
If no play is found there, it could be inside the rear end.

Ok then ill have a shop put it up on a rack and check it out but what about a loud thump when going from drive to neutral?

 

[NumberThree]

Ok then ill have a shop put it up on a rack and check it out but what about a loud thump when going from drive to neutral?

As an assembly, any play / anyWHERE in the drive train can cause an audible "thump" when torque is either applied, or released in it. And this includes from the motor/ trans mounts, to the rear main, u-joints, rear end internals, all the way to the leaf spring brackets, then to the axle, then wheel bearings.
Any one link, or part of the entire chain is capable of wearing to the point of inducing play to the rest of the chain which can be heard. So "where it sounds like it's coming from" can really narrow-down the search for the culprit. But you said you checked the mounts, so I assumed that you're now searching from the transmission back at this point?
My previous suggestion was based upon 'where you left-off' in your hunt.