I have the same problem with a GBS277PRQ01. It's an electric model. After first self clean (about 14 months after we purchased it), it will not bake or broil. Everything else looks like normal (display, etc). I called a couple appliance repair people and both immediately said 'thermal fuse'. This makes sense to me, since the problem started after the self clean. My understanding of the thermal fuse is it works like an electrical fuse, but if the fuse gets too hot, it will trip and shut down the elements.
I was hoping to get some kind of confirmation via this site or another.
It appears to me on some whirlpool oven schematics, part with diagram location of #37 and a verbal description of 'THRMST-FIX' is the part I need. I'm on the road right now and when I get home, I intend to find this part on my oven and I should be able to check it for continuity. If it is not working correctly, I would expect it to be an open circuit.
Have you found out any more about your problem?
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