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Welcome to the King O'Rourke Auto Group,yourLong Island Cadillac, Buick and GMCdealer as well as yourSmithtown Cadillac, Buick and GMCauto dealer in New York . For over 30 years, King O'Rourke has been Long Island's most trusted name for Buick, GMC, and Cadillac. Whether you're searching for a new Smithtown GMC or Cadillac or used Smithtown Buick vehicle, just visit our Smithtown or Port Jefferson showrooms. We also offer GM parts and service in Smithtown, NY . | ||