The dual heating element on my whirlpool cooktop would only come on high when turned on Mary M. • Cape Coral, FL • September 15, 2014 Appliance: Whirlpool Electric Cooktop GJC3634HB1 My Repair & Advice I purchased the Whirlpool Switch-inf Part # AP3672660. I had read in the comments others who had the same issue. I removed the cooktop from its opening, opened it up and replaced the switch. Total time: about 30 minutes A cordless screw gun with Phillips head driver and a knife where the only tools required. Was this review helpful to you?