Power Transfer Unit Case Identification: Notes
WARNING: This page is about a different car, the 2021 GMC Terrain and 2021 Chevrolet Equinox. However, it is still accessible from the selected car via links, so may be relevant.
 Courtesy of GENERAL MOTORS COMPANY
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The power transfer unit primary identification label (1) is located on the rear extension housing or the top of the power transfer unit case. The power transfer unit secondary identification stamping (2) is located on the bottom of the main housing.