John Thornton Buick GMC is proud to be your Buick GMC dealer for all of West Georgia by providing quality automotive services and unrivaled customer service. We work hard to have the perfect vehicle to suit your lifestyle and budget requirements in our impressive selection of new Buick, GMC, or Cadillac vehicles and preowned vehicles. At John Thornton, our philosophy has always been to foster long-term relationships with our customers. Whether you're searching for new Buick, GMC, or Cadillac models, quality preowned vehicles, affordable loan and lease options, routine maintenance, auto repair, or genuine OEM auto parts head to John Thornton Buick GMC in Carrollton!