Hi Martin and everyone else who read my comments yesterday about the GE tall tubs that I and my mother have. I have been pretty down on GE since the technician told us that Mom's early 2005 Triton XL needed a new motor. My late 2003 machine was developing the same symptoms, so I had been planning a new machine purchase. I said here yesterday that I would try a suggested fix to our vibration complaint, and I did that last night.
I verified that the conduit to Mom's center wash arm was quite loose fitting and with high water pressure, could create quite a vibration.
We started up the machine, and instantly the roaring/grumbling began. So, I stopped the machine, installed one zip tie, and we did not hear any sign of the noise the rest of the cycle!! If they don't hear it again on another cycle or two, I think we can pronounce the machine fixed, and I'll feel a lot better about GE's product.
I will say this, barring the discussion of the center wash arm, the tall tub GEs do a nice job washing and they sure are quiet when nothing is vibrating. I can rub my fingers together while in front of the dishwasher and hear it. My dishes are usually not very dirty so when it first starts washing and sensing (I have a PDW7800), it usually goes straight into main wash without draining and refilling. If I fill the supplemental detergent cup, it will drain and refill several times before the main detergent cup opens. Not doing that makes the cycle SHORT, like less than an hour (running the basic normal cycle). You may like one of those machines Martin. If we indeed fixed the vibration yesterday, I can give them my recommendation (vs. the hatchet that I was offering them yesterday, lol). We'll give it a couple more trial runs before I say for sure.