J Charles C Fort Pierce , FL October 17, 2015 Appliance: Whirlpool Undercounter Dishwasher GU2455XTSB2 Whirlpool Dishwasher Gu2455xtsb2: Whirlpool circ motor. How to replace Dishwasher Circulation Pump Motor. Was going to buy new Dishwasher but the similar model in black was delayed to ship until four weeks later (not acceptable to CFO). Went through three tests to determine not controls, not float, not stuck and determine Motor not spinning when powered. Ordered overnight delivery, came in 1 day later and installed in about 20 minutes. it was pretty easy with videos online. biggest bo boo was forgot to plug in the motor and had to withdraw it a second time to connect. Piece of cake fix and I was a hero. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes