Power Transfer Unit Cover Housing Seal and Input Disconnect Shaft Installation

WARNING: This page is about a different car, the 2017 GMC Acadia. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Power Transfer Unit Cover Housing Seal and Input Disconnect Shaft

Courtesy of GENERAL MOTORS COMPANY

Callout	Component Name
1	Input Shaft Seal Protector Procedure Lubricate The ID And OD Areas Of The Seal Protectors With Gear Oil Prior To Use. NOTE: Input shaft seal protector tools are provided within the input shaft seals service kit. The seal protectors are designed to be used during input disconnect shaft installation and to protect the seal ID surfaces from damage. The shorter/larger OD seal protector is to be used on the cover side.
2	Power Transfer Unit Cover Housing
3	Power Transfer Unit Cover Housing Seal NOTE: Apply a thin coating of gear oil to the housing O-ring. Refer to Adhesives, Fluids, Lubricants, and Sealers .
4	Power Transfer Unit Input Disconnect Shaft NOTE: DO NOT remove the input disconnect bearing races from the case half or cover. The case, cover, input disconnect shaft, and input disconnect bearings and races are not available as separate service parts. If component replacement is required, the power transfer unit is to be replaced as an assembly.
5	Power Transfer Input Connect Spring Clip