The son of former Montreal Canadien Claude Larose, Guy Larose played junior with the Guelph Platers and Ottawa 67's. He was claimed 224th overall by the Buffalo Sabres at the 1985 Entry Draft but never came to terms with the club. He signed as a free agent with the Winnipeg Jets and became a scoring star with the Moncton Hawks of the AHL.
Larose was signed by the Bruins as a free agent in 1994 and spent the bulk of the 1994-95 season in Providence, where he scored 58 points in 68 games. He later played four post-season games with Boston.
Later in his career, he won a Turner Cup (IHL) and Calder Cup (AHL) with the Chicago Wolves.