Once I diagnosed the problem, it was very simple. Find the screws and take off the side of the dishwasher, unhook the hose and unclip the control wires. Pull out the old one and pop in the new one. The trick was figuring out that it was the valve on the aquastop that was jammed. More importantly, the woman on the phone at AppliancePartsPros.com was extremely helpful in finding the right part. I didn't know the part number but could describe what it looked like, and she took it from there and even sent a picture so I could make sure it was the right part. I didn't know you could still get service like that.