I have a new 2004 Impala LS with the 3800 engine that has an ongoing problem with the power steering making an annoying hissing noise beyond what is normal. It definitely gets a lot worse and more noticeable when the outside air temperature is over about 40 degrees. It is almost non-existent when the weather is cold. It can heard quite easily at a idle and when driving under 10 MPH. The power steering pump,lines and rack have all been replaced. The dealer doesn't know what else to do and are now saying that they all do it. I am hesitant to believe that and the ones that I have listened to are all quiet.
Anyone else having a similar problem ?
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