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Home >> GMC >> 2019 >> Terrain SL >> Repair and Diagnosis >> External Pages >> Different car >> Section 106 (Transfer Unit/Transfer Case - AAM) >> Repair Instructions - On Vehicle >> Power Transfer Unit Case Replacement (M3D Transmission With LTG Engine) >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2018 GMC Terrain and 2018 Chevrolet Equinox. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Power Transfer Unit Face Seal
    GM4574042Courtesy of GENERAL MOTORS COMPANY
  1. Clean the contact surfaces between the power transfer unit case and the transmission.
  2. Install a NEW power transfer unit case-to-transmission O-ring (1).
  3. Fig 2: Power Transfer Unit Case
    GM4574324Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Use care when installing the transfer case assembly to avoid contact with the pinion spline. Contact with the pinion spline may cause damage to the transfer case assembly.

  4. Support the power transfer unit case with a suitable jack, and secure with suitable straps.
  5. Raise and align the power transfer unit case in the correct position in relation to the transmission.
  6. Install the power transfer unit case (2) to the transmission.
  7. CAUTION:

    Refer to Fastener Caution .

  8. Install the power transfer unit case-to-transmission bolts (1) and tighten to 100 N.m (74 lb ft).
  9. Fig 3: Transmission Mount Strut Bracket Bolts
    GM4891622Courtesy of GENERAL MOTORS COMPANY
  10. Install the transmission mount strut bracket bolts (1, 2). Transmission Mount Strut Bracket Replacement (All Wheel Drive)Transmission Mount Strut Bracket Replacement (Front Wheel Drive)
  11. Fig 4: Electrical Connectors And Wiring Harness
    GM4574313Courtesy of GENERAL MOTORS COMPANY
  12. Connect the electrical connectors (1, 2), then install the wiring harness retainers (3) To the power transfer unit.
  13. Connect the two piece propeller shaft to the power transfer unit case. Two-Piece Propeller Shaft Replacement
  14. Fig 5: Transfer Case Vent Hose And Power Transfer Unit Case
    GM4574300Courtesy of GENERAL MOTORS COMPANY
  15. Connect the transfer case vent hose (1) to the power transfer unit case (2).
  16. Fig 6: Transmission Brace Bolts
    GM4587266Courtesy of GENERAL MOTORS COMPANY
  17. Install the power transfer unit to transmission brace bolts (1) and tighten to 22 N.m (16 lb ft).
  18. Install the power transfer unit heat shield. Power Transfer Unit Heat Shield Replacement (M3D transmission with LTG engine) 
  19. Install the right wheel drive shaft. Front Wheel Drive Half Shaft Replacement - Right Side (AWD)Front Wheel Drive Half Shaft Replacement - Right Side (M3D, M3H with FWD)
  20. Install the exhaust front pipe. Exhaust Front Pipe Replacement (LTG)
  21. Check transmission fluid level. Transmission Fluid Drain and Fill