Hi,

Noises are something we cannot hear for ourselves over a forum.
Some common noise makers:
- bounce sheet caught in the fan blower wheel
- fan blower wheel loose
- rear drum bearing
- front drum support glides
- idler pulley
- motor

www.applianceaid.com/take-apart.html
www.applianceaid.com/ge-dryers.html#noise
Some take apart helps for a peek.