Is it doing anything differently than your old machine like heat the water?
I bought a new dishwasher yesterday, a GE Adoura. I like that it has a third rack, adjustable top rack and upper or lower wash only. It is also very quite. I got a great deal because of a small dent on the side. It has a timer that tells how long the cycle is. It is almost 4 hours. I don’t know if this is normal and I just never noticed or if it is way longer than my old one.
I just noticed that the model you have is the one I was planning on buying to match my new oven and microwave. Four hours is way too long. With 3 kids it already seems like my dishwasher is always going.