Overlooked Jacket and Shirt Outfit
In The Shining, Jack Torrance (Jack Nicholson) goes crazy and attempts to kill his wife and son. In the beginning of the movie, Jack agrees to be the caretaker of the Overlook Hotel during the winter. He moves in with his family and experiences a severe case of cabin fever, which leads to hallucinations of ghosts and eventually him losing his mind. In GTA V, Trevor Phillips can purchase the outfit called "Overlooked Jacket and Shirt" which bears an almost identical appearance to Jack Torrance's outfit in The Shining. Additionally, the outfit is named after the Overlook Hotel where the movie's events took place.
Axe in the Door
The ax lodged in the door at Trevor's safehouse in Vespucci Beach is a clear reference to one of the most famous scenes in horror movie history. In the film, Jack Torrance's wife and son were hiding in a bathroom. Jack takes an ax and violently chops a hole through the bathroom door, and then sticks his head through the opening and yells "Here's Johnny!", much to the fear of his wife and child.
The reason why the ax got lodged in the door in GTA V is never revealed, though it is most likely that it is an Easter egg, referencing the film.