Hello, just bought my 2011 Buick Regal T about a month ago, i'm liking the car and all but its been in the shop more then I have driven it seems. Keep having to take it back as my air conditioner doesn't like to come on after its been sitting for about 8-10 hours, all i get is hot air for about 10 minutes then finally the air conditioner kicks in cold. Dealer cannot duplicate of course.