The same sound started in the back of the car. the dealership is replacing something they say to do with the air conditioning. Why is the noise now in front? It just started the other day. is it covered under warranty with the mileage I have on my car. If not how much is this going to cost me? I just bought this car a month ago used with only 59000 miles on it. I hope I did not get a lemon. I am so disappointed. Please help.