Patrick S Dallas , TX March 10, 2015 Appliance: Whirlpool Washer GHW9400PW4 Whirlpool Washer Ghw9400pw4: Broken control knob. How to replace Control Knob. Happened onto your website. Watched the brief video. Spoke w helpful and friendly rep at your 800 number. Ordered. Knob arrived 2 or 3 days later. Thanks! Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes