Power Transfer Unit Shift Components 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 Shift Components

Courtesy of GENERAL MOTORS COMPANY

Callout	Component Name
Preliminary Procedure Clean the power transfer unit shift components in cleaning solvent and air dry. NOTE: Minimal gear tooth wear is to be considered normal.
1	Power Transfer Unit Connect Spring NOTE: Inspect for excessive wear or damage.
2	Power Transfer Unit Shift Sleeve NOTE: Inspect for excessive gear tooth wear or a broke spring.
3	Power Transfer Disconnect Linear Cam NOTE: Inspect for excessive wear or damage.
4	Power Transfer Disconnect Rotary Cam NOTE: Inspect for excessive wear or damage.
5	Power Transfer Unit Actuator Worm Gear NOTE: Inspect for excessive wear or damage.