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Home >> Buick >> 2018 >> Regal Base >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 8 (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 variant/trim than selected.
  1. Remove the front wheel drive half shaft. Front Wheel Drive Half Shaft Replacement - Right Side (AWD)Front Wheel Drive Half Shaft Replacement - Right Side (FWD)
  2. Remove the three way catalytic converter. Three-Way Catalytic Converter Replacement (Bank 1)Three-Way Catalytic Converter Replacement (Bank 2)
  3. Remove the transfer case bracket. Transfer Case Bracket Replacement (2.0L LTG) Transfer Case Bracket Replacement (3.6L LGX) 
  4. GM3824314

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

  5. Support the power transfer unit case (2) with a suitable jack, and secure with suitable straps.
  6. GM4852389

    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 from the transmission.
  9. GM3931381

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

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