Mary Jo S Stuart , FL August 21, 2016 Appliance: General Electric General Electric GLDP280GD0WS Ge Dryer Gldp280gd0ws / : The timer and knob needed replacing. How to replace Dryer Control Knob. Watched the tutorial then found the procedure very easy to do. made a note on paper of which colored wires went where as a back up. The whole procedure took about 20 minutes. 3 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes