The compressor for my AC makes a swish or click noise that is fairly loud when I first start the AC when the truck is started with the AC off. When it cycles normal it doesn't do it. If I start the truck with it on it doesn't do it. When it does do it it sounds not right. The AC works OK. I just don't want the dealer to say it's normal if it's not, One week left on warranty. Then have it fail later and pay fully for it.