The service department is excellent. I have dealt with other dealerships and often left feeling frustrated. At Buick GMC of Watertown, the staff are helpful, patient, and pleasant (I often deal with Ian). They always do their best to give me a loaner car, which is HUGE. Most importantly, I don't feel like they suggest unnecessary fixes or spending more than necessary. The experience there is always, friendly and quick. I would consider another Buick or GMC strictly because of the service staff at Buick GMC Watertown.