It seems to be getting more frequent, and if at all possible, higher pitched. At first the squeak was just when the load was first started, now it pops up sporadically throughout the cycle. Nails on a chalkboard cannot begin to compare to this sound. Anyone know what this is (for sure) and what I can do to repair? I would be so very thankful!

It is probably the drum bearing.

See my answer to this post (https://www.askmehelpdesk.com/appliances/should-call-applicance-repair-shop-fix-screeching-dryer-myself-572233.html) for more info.

Good luck,
WallyH