I have the SS GE Profile too and really love them. We also have the confection microwave which is GREAT! Not only is it an extra oven but also has the microwave with it!
We haven't replaced the dishwasher yet but that is next. We have the plastic interior and it had so much soap build up it was just gross. So the other day I went on a mission to find something to clean it. I read that you can add a cup of white vinegar and baking soda to clean any soap build up. After you can add a cup to your loads to keep it smelling great. I tried it and it really worked!