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Home >> Buick >> 2020 >> Envision Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 222 (Power Transfer Unit/Transfer Case - AAM) >> Repair Instructions - On Vehicle >> Power Transfer Unit Case Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2020 Buick Regal TourX, 2020 Buick Regal, 2019 Buick Regal TourX, and 2019 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.
  1. Propeller Shaft - Remove - Propeller Shaft Replacement
  2. Remove the transfer case bracket. Transfer Case Bracket Replacement (2.0L LTG) , or Transfer Case Bracket Replacement (3.6L LGX) 
  3. GM3824314Courtesy of GENERAL MOTORS COMPANY

    Disconnect the power transfer unit vent hose (1) from the power transfer unit (2).

  4. Support the power transfer unit case (2) with a suitable jack, and secure with suitable straps.
  5. GM5315789Courtesy of GENERAL MOTORS COMPANY

    Transmission Rear Mount Bracket Bolt (1) - Remove [2x]

  6. GM4852389Courtesy of GENERAL MOTORS COMPANY

    Remove the 4 power transfer unit case bolts (2).

  7. Remove the wiring harness bracket bolt and wiring harness bracket from the transfer case.
  8. Separate the power transfer unit case (1) from the transmission.
  9. GM3931381Courtesy of GENERAL MOTORS COMPANY

    Remove and DISCARD the power transfer unit case O-ring.