Perry K Havana , FL June 30, 2023 Appliance: General Electric Dishwasher GSD2400N10WW Ge Dishwasher Gsd2400n10ww: Dishwasher has residue remaining after use. How to replace Coupler. Mostly just cleaning. I also discovered the Coupler (small tube) was cracked and the Fine Filter hard to get really cleaned out. The videos at Appliance PartsPros.com make taking things apart to clean and repair a straightforward task. Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes