The Northeast District RCMP say the man was attempting to fix his RV trailer on Andrew Street around 12:30 p.m. when his pickup truck and the attached trailer started to roll down the hill.
He was run over by the vehicles, Cpl. Raphaël Vézina stated in a release.
The victim was transported to a hospital where he later died.
His name is not being released at the request of his family, said Vézina.
No one else was injured.