He played junior hockey for the St. Catharines Black Hawks in 1972-73. The Boston Bruins chose him 142nd overall in the 1973 NHL Amateur Draft. He played three seasons for the Dayton Gems before getting a chance with the Bruins. Pettie played one game in 1976-77, one in 1977-78, and 19 in 1978-79.
Pettie retired in 1981.