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Home › Buick › 2018 › LaCrosse Base › Repair and Diagnosis › Transmission › Automatic Trans › Power Transfer Unit/Transfer Case - AAM › Repair Instructions - On Vehicle › Power Transfer Unit Case Replacement › Removal Procedure

Removal Procedure

  1. Remove the right wheel drive shaft. Front Wheel Drive Half Shaft Replacement - Right Side (AWD)
  2. Remove the catalytic converter. Three-Way Catalytic Converter Replacement (Bank 1, AWD)Three-Way Catalytic Converter Replacement (Bank 2)
  3. Remove the transfer case bracket. Transfer Case Bracket Replacement 
  4. GM3824314

    Disconnect the transfer case vent hose (1) from the transfer case (2).

  5. Disconnect the propeller shaft from the transfer case. Propeller Shaft Replacement
  6. Support the transfer case (2) with a suitable jack, and secure with suitable straps.
  7. GM4439179

    Remove and DISCARD the transmission bracket to transfer case bolt (1).

  8. GM4436573

    Remove and DISCARD the transfer case-to-transmission bracket bolt (2).

  9. Remove the remaining transfer case retaining bolts (1, 3, 4 5).
  10. Remove the wiring harness bracket from the transfer case.
  11. Separate the transfer case (6) from the transmission and remove the transfer case.
  12. GM3931381

    Remove and DISCARD the transfer case-to-transmission O-ring.

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