Called a repairman and couldn’t come for 2 weeks. So I got on You Tube and found out exact dryer with the exact problem. Bad pulley on an idler arm assembly. Looked like an easy fix. Ordered the part from Appliance Parts Pros. It can in 2 days. Removed the back of the dryer. Unscrewed one screw, detached the spring and removed the belt. Installed the new part the same way. Success!