Ed Z Henderson , NV August 24, 2020 GE gas dryer did not heat at one particular setting on the selector knob. Replaced timer and still did not work properly. I noticed that the plastic knob had cracked where it attaches to the timer. Replaced the knob and it now works fine. With the knob being cracked it was selecting a random cycle or none at all. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes