Thomas Brintzenhofe has been a certified mechanic for more than 14 years and a certified master mechanic for more than eight years. He is a General Motors certified driveability technician, an Automotive Service Excellence (ASE) certified mechanic and a trained automotive instructor. Brintzenhofe owned and operated a fully functional automotive repair garage for four years. He currently works as an industrial heavy equipment mechanic for International Steel Group in Coatesville, Pa.