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Home >> Buick >> 2021 >> Envision Essence, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Power Transfer Unit/Transfer Case - AAM) >> Repair Instructions - On Vehicle >> Power Transfer Unit Case Fluid Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different variant/trim than selected.
  1. Power Transfer Unit Heat Shield - Remove - Power Transfer Unit Heat Shield Replacement 
  2. Fig 1: Identifying Power Transfer Unit Drain Plug And Fill Plug
    GM5605202Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    When performing the following procedure, use only hand tools to remove and install the drain and fill plugs.

    NOTE:

    Ensure that an approved drain pan is used when draining the transfer case.

    Power Transfer Unit Drain Plug (1) - Remove

  3. Power Transfer Unit Fluid @ Power Transfer Unit Case - Drain
  4. Power Transfer Unit Fill Plug (2) - Remove