It is a medium to low pitch vibrating noise. I'd say it's not a
banging more of a whiring noise. And it's pretty constant except for
maybe a slight frequency.

Lint trap is clean. I first checked the vent tube and it was clear.
But since I went outside and the little lift door was stuck not
allowing it to vent. I fixed that, but the problem continues.

How freely is the drum suppose to spin by hand?