Hi,Welcome to Just Answer, My name isXXXXX will be helping you with your appliance issue today.
Can you resend the model number and put a space between each number? When you say a very loud thumping at the end of the cycle is that at the end of the spin cycle when the machine stops? Is it almost like a bang?
tHE CYCLES SEEM TO BE CORRECT THE INNER TUB SEEMS LOOSE
Okay the inner tub seems loose this could mean one of a couple of different things,1 the spanner nut that holds the tub could of loosened, or the drive block maybe bad, you will need to check these things and there are help videos for this, I'm going to include the links to the videos, this one is for the drive block which will cover the spanner nut also, click the blue link below,
I'm sure is one or the other, hope this info is useful, thanks and well wishes Bryan