Shop online for your new or used cars by GMC, Buick & Pontiac at Jones GM. We are a Lancaster, Reading, York, Harrisburg area dealership with a comprehensive inventory and competitive prices. With internet specials on new and used Buick Pontiac GMC cars, trucks, SUVs. Complete Buick Pontiac GMC authorized service and genuine Buick Pontiac GMC parts department for Lancaster, Reading, York, Harrisburg, PA