need the socket size required to remove the CV axle nut

Most likely it's a 28mm you can rent a couple different size sockets at autozone. But 30mm come on the sport module.

Drive Axle Nut .................... 200 N.m (148 lb ft)

Here is a guide to help you change the CV axle out.

https://www.2carpros.com/articles/replace-cv-axle

Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.

Cheers