Okay cool. My mechanic said something about “they don’t do the TC”?

Is it just swapping the trans fluid? Or does the fluid go throughout the TC and transmission?

Wondering if this is the cause of this.

I really don’t think it’s the TC. I’ve tried to move the driveshaft (u joint) but it can’t be moved, not sure if it’s supposed to.

However, when shifting into D or R, there’s a clunk. The driveshaft / transmission seem to move more than they should, however I’m not a mechanic. Switching into N, P or L (manual gears) does not clunk.