Jerald G Fort Calhoun , NE December 14, 2021 Appliance: Whirlpool Washer GHW9400PL4 Whirlpool Washer Ghw9400pl4: My washer was not draining. How to replace Washer Drain Pump Assembly. Replacing the pump solved the problem. The hose clamps were a pain. Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes