Robert S Franklin , TX February 17, 2015 Appliance: Model GJC 3034HB2 The dual heating element on my whirlpool cooktop would only work on high I replaced the dual element switch. From the time I located the replacement part on ApplianceParts Pros.com to the time I finished, the job was simple. The replacement part was not identical to the old one but the instructions were great. I ordered the part (the cheapest shipping price) at 10 A.M. on a Friday and it arrived ( By FedEx) at 2 P.M. Saturday. I have ordered parts from AppliancePartsPros.com before and have always gotten excellent service. Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes