Take a look at Consumers Report......you'll see a lot of GM recommended models. And, it you want cheap and reliable look at the Koreans......that have made impressive improvements in the last couple of years.
I'm selling off a 4 year old Buick Lecrosse with 35,000 miles next month.....It's never had one bit of warranty work performed. Sometimes when a Toyoda breaks down,say 'Everything breaks once in a while" When a domestic brakes down they say: "see, Detroit built another lousy car" Am I prejudiced? Sort of, I have distant family in Detroit, and I know the Japanese frown upon buying anything but their own products because they would be disloyal to their fellow Countrymen......So, you don't see many BMW's or Audi's in Japan.
I agree that Detroit has to earn our business. I don't believe, however, that there is significant difference in quality except for a very few models. So, before you buy, look at the model stay away from the losers....regardless of who built them Me? I buy Detroit and Korean ......both have been very reliable the past few years.