Carl S Portland , OR August 26, 2021 Appliance: General Electric Gas Range JGB918SEL3SS Ge Range Jgb918sel3ss: Control knobs worn out, breaking. How to replace Thermostat Knob. Replaced the knobs. I ordered burner knobs and replaced them but the lower oven control knob was different although it looked the same. I see now that the parts list has the knobs separately as burner knobs and a thermostat knob. The thermostat knob is at the bottom of the parts list and is clearly identified, I just missed it. Now all the knobs have been replaced and I have a burner knob left over. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes