1979 | 5 Episodes

Season 1 of Grandad premiered on October 3, 1979.

1980 | 6 Episodes

Season 2 of Grandad premiered on October 8, 1980.

1982 | 6 Episodes

Season 3 of Grandad premiered on February 17, 1982.

1984 | 5 Episodes

Season 4 of Grandad premiered on January 4, 1984.