Gitane - Renault - System U - Super U
Tour de France 1976, 1978, 1979, 1981, 1982, 1983, 1984
Giro d'Italia 1980, 1982, 1989
Vuelta - 1978, 1983.
Thats 12 GT's for Cyrille Guimard and his team. I know it doesn't count at the end of the day, but Hinault would have won the Tour in 1980 if he didn't get injured, Fignon was robbed of a Giro win in 84 and he would have won the 89 Tour if Lemond hadn't cheated.
I can't be arsed counting all or Hinaults classic wins, let alone adding classic and WC wins of the likes of Lemond, Madiot, Fignon etc.