Courtesy Kingsport is an auto dealer in Kingsport, Tennessee. Welcome to Courtesy Chevrolet Buick GMC Cadillac Subaru in Kingsport, TN. We proudly serve Johnson City and surrounding cities in Tennessee. We are strongly committed to superior customer service, and we welcome you to come by our dealership and experience it for yourself. We are a great source for new and used Chevrolet, Buick, GMC, & Cadillac cars, trucks, and SUVs.