Power Transfer Unit Input Disconnect Shaft Cleaning and Inspection

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 Input Disconnect Shaft

Courtesy of GENERAL MOTORS COMPANY

Callout	Component Name
Preliminary Procedure Clean the power transfer unit input disconnect shaft in cleaning solvent and air dry. The case halves, internal gears and bearings are not serviceable components. If damage is present, the transfer case assembly must be replaced.
1	Power Transfer Unit Input Disconnect Shaft - Front NOTE: Inspect for excessive wear or damage.
2	Power Transfer Unit Input Disconnect Shaft Gear Teeth NOTE: Inspect for excessive wear or damage.
3	Power Transfer Unit Input Disconnect Shaft - Rear NOTE: Inspect for excessive wear or damage.
4	Power Transfer Unit Input Disconnect Shaft Seal Surfaces NOTE: Inspect for scoring or damage.
5	Power Transfer Unit Input Disconnect Shaft Splines NOTE: Inspect for excessive wear or damage.