Received our 2008 Enclave just over a month ago and already have almost 2,800 miles on it. The other day when I was backing the car into a parking spot, the power steering seemed to have a loud whine noise, almost like it was low on power steering fluid. Car also seems to drive noisy when I am driving below 30 mph. Has anyone else experienced this problem? I had OnStar run a diagnostic check and it was all clear. Plan on taking the car to the dealer tomorrow and verify everything is ok. BTW - I have been reading the posts regarding delivery date and I ordered my car on July 26, 2007; according to the dealer it went into production on September 5th (takes one day to build a car) and car was delivered from Michigan to Southern California in two weeks (Sept. 19th).