Hi Michael,
The part number for the left front (dual) burner switch is
AP3672660
A burner not suppose to go on High heat if the temperature set on "low" and the problem in such case is a bad burner switch.
The part number for the right rear burner switch is
AP3010400
The part number for the left rear & right front (they are identical) burners switch is
AP3046996
Gene.