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Home >> Buick >> 2020 >> Regal Essence, AWD >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Power Transfer Unit/Transfer Case - AAM >> Description and Operation >> Power Transfer Unit Case Identification >> Notes
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Power Transfer Unit Case Identification: Notes

GM3752618Courtesy of GENERAL MOTORS COMPANY

The power transfer unit primary identification label (1) is located on the rear extension housing. The power transfer unit secondary identification stamping (2) is located on the bottom of the main housing.