My Whirlpool Dishwasher was leaking from the bottom center and I had a technician who diagnosed and said that the Diverter Motor, part number W10537869, needs to be replaced. He just opened the bottom cover, ran the dishwasher cycle and saw water leaking but didn't remove any of the parts to confirm.

I looked at the forum here, ordered and fixed that part and the dishwasher is still leaking in the same place near the diverter motor. What did I miss? It seems the old diverter motor part is still good.

Is it he grommet? Do i need to replace the Sump (W10455268) assembly? Is that something I can do myself? Any help is appreciated. I searched the forums and some talked about replacing sump and some talked about just applying the seal/grommet.