Northern Motors Inc. is a car dealership that provides flexible and thorough service to its customers. The service team is willing to double and triple check issues, even if they initially cannot identify the problem. They were able to fix a loose bolt that was causing exhaust fumes in a customer's 2021 Silverado with a 3.0 Duramax, resulting in a noticeable difference. However, the dealership may have limited selection of used cars to meet customers' requirements.