I have a Frigidaire Gallery Commercial Heavy Duty dryer that squeaks off and on when in use. It doesn't do it with every load or every time. I have tried small loads, it squeaks, I have tried med. Load, still squeak, big load, squeak still there, it seems to be here to stay! Please help me save my sanity and my hearing! Any resolutions to fixing this irritating problem?

The drum has rollers, a fan belt and an idler pulley, all of which can squeek. If you pry up the top most of these parts will be visible but unplug the unit first. Each of these parts is fairly easy to replace, they are usually the first things to go bad.