Oil changed service performed, next day I noticed my car started leaking fluid which was determined it was coolant and they replaced water pump. The air filter was dirty and it was replaced as it was noted and printed on my receipt. When I pickup my car for the second time my check engine came on, first I called and left a message for the service advisor-no call back. I made appt online and I got charge $180 for finding "hose from air cleaner to valve cover off, reinstalled, cleared code." More to this story but I will end my review here. I will write a letter to the GM and post more complaints online. I will never buy another vehicle related to Cadillac/GMC due to overall customer disatisfaction. Thank you for taking time to read.