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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 186 (Engine Mechanical - 2.0L (LTG) - Repair Instructions - On Vehicle) >> Repair Instructions - On Vehicle >> Turbocharger Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2017 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Turbocharger Components
    GM2769468Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    This component uses torque-to-yield bolts. When servicing this component do not reuse the bolts, New torque-to-yield bolts must be installed. Reusing used torque-to-yield bolts will not provide proper bolt torque and clamp load. Failure to install NEW torque-to-yield bolts may lead to engine damage.

    CAUTION:

    Refer to Fastener Caution .

    NOTE:

    The exhaust pipe studs do not come installed on new turbochargers. If the turbocharger is being replaced, new studs will need to be installed.

  1. Install a NEW turbocharger gasket (3) on the turbocharger.
  2. Install NEW turbocharger oil feed and oil return pipe gaskets (4, 5).
  3. Install the turbocharger (1).
  4. Install NEW turbocharger nuts (2) finger tight.
  5. Install the turbocharger oil feed and return pipe bolts (6) at the engine block. tighten the bolts to 10 N.m (89 lb in).
  6. Fig 2: Turbocharger Nut Tightening Sequence
    GM2769467Courtesy of GENERAL MOTORS COMPANY
  7. Tighten the turbocharger nuts in sequence:
    1. First pass 30 N.m (22 lb ft).
    2. Final pass plus 90 degrees.
  8. Fig 3: Turbocharger Oil Return Pipe Bolts
    GM2874434Courtesy of GENERAL MOTORS COMPANY
  9. Install the turbocharger oil return pipe bolts (1) and a NEW gasket and tighten the bolt to 10 N.m (89 lb in).
  10. Fig 4: Turbocharger Coolant Return Pipe Bolt And Gasket
    GM2874433Courtesy of GENERAL MOTORS COMPANY
  11. Install the turbocharger coolant return pipe bolts (1) and NEW gasket (2) and tighten the bolt to 10 N.m (89 lb in).
  12. Fig 5: Turbocharger Oil Feed Pipe Bolt And Gasket
    GM2874432Courtesy of GENERAL MOTORS COMPANY
  13. Install the turbocharger oil feed pipe bolts (1) and NEW gasket (2) and tighten the bolt to 10 N.m (89 lb in).
  14. Fig 6: PCV Hose And Fitting Bolt
    GM2845924Courtesy of GENERAL MOTORS COMPANY
  15. Install the PCV hose (1) and bolt (2). Tighten to 8 N.m (71 lb in)
  16. Fig 7: Turbocharger Coolant Return Pipe Bolt And Gasket
    GM2877015Courtesy of GENERAL MOTORS COMPANY
  17. Install the turbocharger coolant return pipe bolts (1) and NEW gasket (2) and tighten the bolt to 10 N.m (89 lb in).
  18. Connect electrical connectors as necessary.
  19. Install the charger air cooler inlet air tube. Refer to Charge Air Cooler Inlet Air Tube Replacement (LTG) .
  20. Install the catalytic converter. Refer to Catalytic Converter Replacement (LCV)Catalytic Converter Replacement (LTG) .
  21. Fig 8: Turbocharger Heat Shield
    GM2874428Courtesy of GENERAL MOTORS COMPANY
  22. Install the turbocharger heat shield (1). Refer to Turbocharger Heat Shield Replacement .
  23. Fill the coolant system. Refer to Cooling System Draining and Filling (Static)Cooling System Draining and Filling (GE 47716) .
  24. Install the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement (LCV)Air Cleaner Outlet Duct Replacement (LTG) .
  25. Install the intake manifold cover. Refer to Intake Manifold Cover Replacement .