July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!
Power Transfer Unit Case Identification: Notes
WARNING: This page is about a different car, the 2019 Chevrolet Traverse. However, it is still accessible from the selected car via links, so may be relevant.
Courtesy of GENERAL MOTORS COMPANY
The transfer case identification label (1) is located on the top of the cover housing.