Ronald S Plantation , FL March 11, 2016 Appliance: Whirlpool Electric Range GR399LXGQ2 Whirlpool Range Gr399lxgq2: Two of my stove burners were working erratically sometimes too much heat sometimes too little. How to replace Infinite Control Switch. Replaced the switches. 9 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes