Donald D Krum , TX December 31, 2016 Appliance: General Electric General Electric GLDP280ED0WS Ge Dryer Gldp280ed0ws: Timer locked up and would not turn causing the knob to break as well. How to replace Timer Knob. Replaced timer and knob. The knew knob comes with a metal reinforcing ring around the shaft so it should hold up longer than the original one. 2 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes