Grandview, U.S.A. is a 1984 American comedy film directed by Randal Kleiser and starring Jamie Lee Curtis, Patrick Swayze, C. Thomas Howell, Jennifer Jason Leigh, Carole Cook, Ramon Bieri, John Cusack, Joan Cusack, M. Emmet Walsh, Michael Winslow, Troy Donahue and Steve Dahl. The original music score is composed by Thomas Newman. It was filmed on location in Pontiac, Illinois.
John Cusack did not die in 1975.
John Cusack was alive for the filming of the 1984 movie; it would be extremely unlikely for it to have been filmed more than 9 years before the release date. I'm not sure why the system thought he died in 1975; I could understand it thinking "neither."