O'Neil Buick GMC   Michael O'Neil   869 West Street Road   Warminster, PA 18974   267-282-4456   koneil@oneilbuickgmc.com   https://www.oneilbuickgmc.com/ O'Neil Buick GMC has an outstanding reputation because we put the customer first. Proudly serving as your Philadelphia Buick and Philadelphia GMC dealership, we offer every service you need to meet your transportation solution. Visit our Buick GMC dealership in Pennsylvania and test-drive the new 2012 GMC Terrain Crossover SUV or the 2012 Buick Enclave. Looking for a Bucks County Buick or Bucks County GMC dealer? Come in and see the award-winning 2012 Buick LaCrosse sedan or 2012 GMC Sierra truck.