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Home >> Buick >> 2021 >> Envision Preferred, AWD >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Power Transfer Unit/Transfer Case - AAM >> Repair Instructions - On Vehicle >> Fill Plug Replacement >> Installation Procedure
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Installation Procedure

  1. Fill the power transfer unit to the bottom of the power transfer unit fill plug hole with the recommended fluid. Adhesives, Fluids, Lubricants, and Sealers , and Approximate Fluid Capacities 
  2. Fig 1: Identifying Power Transfer Unit Fill Plug
    GM5605203Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Component Fastener Tightening Caution

    Power Transfer Unit Fill Plug (1) @ Power Transfer Unit Case - Install and tighten 40 N.m (30 lb ft)

  3. Power Transfer Unit Heat Shield - Install - Power Transfer Unit Heat Shield Replacement 
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