2013 ATS 2.0T AWD
This is not unique to an ATS but I believe a used car dealer, certified or not, should pass on all service history records to the consumer when purchasing a used car from a dealer. I was lucky when I bought my 2013 ATS. I was able to access all service records thru www.mycarfax.com using the VIN. The dealer uploaded all service and I found every single visit with all details for my car from the date of delivery (of the previous owner) to all my service records, even those that I added myself. It helped immensely.