Raymond R Sweeny , TX July 08, 2017 Appliance: Whirlpool Electric Dryer GEW9200LW1 Whirlpool Dryer Gew9200lw1: Timer knob and dial needed to be replaced. How to replace Control Knob Assembly. Replaced timer knob and dial. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes