GE dishwasher model GLDT690T00WW

So I have a call on a GE dishwasher model GLDT690T00WW. Initial call was that the unit would fill and drain but would not wash. The cycle counts down thinking it’s washing. When I went out to the call I checked voltage…there was 120 to the mech and I noticed evidence of water had been leaking from it. I then ran the diagnostics mode with no errors. Then I ran the service test mode and everything functioned properly other than the motor. Since the unit is not too old the customer called GE and got the motor shipped to them. I came out 2 days later, installed the mech and tested it.
Here’s the issue; the mech ran fine in the initial cycle when I tested it. I wanted to cancel it and make sure that it would wash in the "Normal" cycle as well so I reset the unit and tried it again. This time when I ran it the unit would not wash. I cancelled the cycle and re-started the "Normal" cycle…same thing. I turned the breaker off on the unit (thinking maybe I had made the board mad ha) and recommended that the customer turn it on an hour after I left and then call me and update me. I received a call this morning that the unit is just filling and draining again. Any ideas would be helpful!