Power Transfer Unit Input Shaft and Idler Shaft Installation
WARNING: This page is about a different car, the 2018 Buick Envision. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Exploded View Of Power Transfer Unit Input Shaft And Idler Shaft Components
Courtesy of GENERAL MOTORS COMPANY
Power Transfer Unit Input Shaft and Idler Shaft Installation