Deborah K Coraopolis , PA June 23, 2022 Appliance: General Electric General Electric GTDP180GD0WW Ge Dryer Gtdp180gd0ww / : The timer knob shaft was cracked. Would not work !. How to replace Timer Knob Assembly. I got the new one and it was really simple to put it on! It's working. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes