heating element stuck on high

Oven Repair (including Ranges and Cooktops)
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1

The left front element sticks on high for both dual and single burner.
Where should I start?

3

Here are your parts
http://www.appliancepartspros.com/partsearch/modelsearch.aspx?model=GR773LXSS

I would replace the infinite switch for that element.