I need help trouble shooting washer

Washer Repair
1

Brand:whirlpool
Model Number:wtw5100vq0
Main Symptom:noisy
What happens & when:During wash cycle . Also noticed the agitator is spinning in one direction only, and not back and forth.

Error Code (if any):
Parts or tests already tried:
Photos / video link:

2

That’s going to be a failure within the gearcase/transmission 3360629.

https://www.appliancepartspros.com/whirlpool-neutral-drain-transmission-3360629-ap3096209.html