Richard A Loveland , CO April 03, 2020 Appliance: General Electric Washer GFW450SPK0DG Ge Washer Gfw450spk0dg: Tub stopped tumbling or spinning. How to replace Washer (34 X 12.5 X 3.5 Mm). The driver pulley had loosened causing the belt to slip off. Replaced the pulley and belt. Works great again and quiet while spinning. This YouTube video has a great tip for using cable ties for getting the new belt on, which is really tight. https://youtu.be/qjN9Ibz6Azs Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes