I brought my 2012 Acadia with about 57K miles on it in for a rattling noise within the engine and stabiltrack warning lights. Last year I brought the vehicle in for the same problems and spent about $1600 to have a fuel injector replaced. This time, the mechanic found that the problem was with the wrist pins and that I would need to replace the engine. Obviously I was not going to dump another $7500 into it so I picked it up. The Service Dept. has always been courteous throughout all my dealings with them these past 7 years of owning the Acadia. My low rating to question 2 is not reflective of the Dealership, it has more to do with the quality of GM vehicles. Unfortunately because this car didn't last as long as I expected it to I will not be purchasing another GM vehicle nor would I suggest an Acadia to anyone else in the future as I have in the past.