Dryer is running but makes a loud squealing or screeching noise during drum rotation

Safety first: Unplug the dryer. Noise diagnosis requires running briefly with panels off only if you can do so safely and without touching moving parts.

• Initial check: Rotate the drum by hand with the dryer unplugged. Listen for squeaks or grinding.
• Access drum supports: Remove the front or rear panel to expose the drum rollers and idler pulley.
• Inspect rollers and idler: Spin each roller and the idler pulley by hand. If they squeal, feel rough, or wobble, replace them as a set if possible.
• Check felt seals: Inspect the front and rear drum felt seals for wear, tears, or displacement. Replace if the drum metal is rubbing on the cabinet.
• Remove foreign objects: Look for coins, bra wires, or other items caught at the drum edges and remove them.