If the oven does not heat during the bake cycle or the self clean I would check the oven ignitor.
98% of the time when I check a gas oven for a no heat problem it's just the ignitor.
The way to check the ignitor you will need to use a clamp amp meter to see how many amps it draws.
If you do not have a meter to use then about all you can do is to replace the ignitor and try it.
Ignitor Factory Part Number: 12400035
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