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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 91 (Engine Mechanical - 3.6L (LF4 LGX) - Repair Instructions - On Vehicle) >> Repair Instructions - On Vehicle >> Engine Replacement (LGX, AWD) >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2016 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.
  1. Install the engine to the transmission. Transmission Replacement (M5N with LGX Engine) .
  2. Place the powertrain and frame assembly on the engine support table.
  3. Secure the powertrain to the support table using straps and binders.
  4. With the aid of an assistant, carefully lower the body onto the powertrain assembly.
  5. Ensure when lowering the body the following items are clear from the frame:
    • Vacuum lines
    • Steering knuckles
    • Electrical wiring harnesses
    • Oil cooler lines
  6. Install the drivetrain and front suspension cradle with the powertrain attached. Drivetrain and Front Suspension Cradle Replacement (V-Series)Drivetrain and Front Suspension Cradle Replacement (Non V-Series) .
  7. Remove the engine support table.
  8. Complete installation of the transfer case. Transfer Case Assembly Replacement .
  9. Complete installation of the transmission. Transmission Replacement (M5N with LGX Engine) .
  10. Catalytic Converter Install - Catalytic Converter Replacement - Left Side (LGX) , and Catalytic Converter Replacement - Right Side (LGX)
  11. Transmission Fluid Cooler Pipe @ Radiator Assembly Connect - Transmission Fluid Cooler Inlet and Outlet Pipe Replacement (LGX With AWD, Without V03)
  12. Engine Lower Front Splash Shield Install - Front Wheelhouse Splash Shield Replacement (AWD)
  13. Front Compartment Lower Noise Shield - Install - Front Compartment Lower Noise Shield Replacement (AWD)
  14. Lower the vehicle.
  15. Fig 1: Air Conditioning Compressor Hose
    GM4088992Courtesy of GENERAL MOTORS COMPANY
  16. Air Conditioning Compressor Hose @ Air Conditioning Compressor Connect - Air Conditioning Compressor Hose Replacement (LGX)
  17. Fig 2: Power Brake Booster Vacuum Sensor
    GM4066216Courtesy of GENERAL MOTORS COMPANY
  18. Power Brake Booster Vacuum Sensor - Connect
  19. Evaporative Emission Canister Purge Tube Install - Evaporative Emission Canister Purge Tube Replacement (LGX)
  20. Fig 3: Fuel Line At Fuel Feed Pipe
    GM4167305Courtesy of GENERAL MOTORS COMPANY
  21. Fuel Line @ Fuel Feed Pipe Connect - Fuel Feed Pipe Replacement (Fuel Tank To Engine LGX)Fuel Feed Pipe Replacement (LGX at Engine)
  22. Fig 4: Heater Outlet Hose
    GM4167273Courtesy of GENERAL MOTORS COMPANY
  23. Heater Outlet Hose @ Radiator Surge Tank Connect
  24. Heater Outlet Hose @ Heater Core Connect
  25. Fig 5: Heater Inlet Hose
    GM4167258Courtesy of GENERAL MOTORS COMPANY
  26. Heater Inlet Hose @ Heater Core Connect
  27. Remove mechanics wire that supported the radiator assembly to the vehicle body.
  28. Reposition and connect harnesses as necessary.
  29. Fig 6: Radiator Outlet Hose
    GM4105036Courtesy of GENERAL MOTORS COMPANY
  30. Radiator Outlet Hose @ Water Pump Connect
  31. Fig 7: Radiator Surge Tank Inlet Hose (LGX)
    GM4092953Courtesy of GENERAL MOTORS COMPANY
  32. Radiator Surge Tank Inlet Hose @ Engine Coolant Air Bleed Pipe Connect
  33. Fig 8: Radiator Inlet Hose (LGX)
    GM4093189Courtesy of GENERAL MOTORS COMPANY
  34. Radiator Inlet Hose @ Water Outlet Connect
  35. Position the engine harness.
  36. Fig 9: Engine Control Module Electrical Connector
    GM4167076Courtesy of GENERAL MOTORS COMPANY
  37. Engine Control Module Electrical Connector - Connect
  38. Install the battery terminal to the jump start post.
  39. Install the front compartment fuse block. Front Compartment Fuse Block Housing Replacement (With Out KL9)Front Compartment Fuse Block Housing Replacement (With KL9)
  40. Install the air cleaner assembly. Air Cleaner Assembly Replacement (LGX)
  41. Install the front compartment front sight shield. Front Compartment Front Sight Shield Replacement (Sedan)Front Compartment Front Sight Shield Replacement (Coupe)Front Compartment Front Sight Shield Replacement (ATS-V)
  42. Intake Manifold Insulator Install - Intake Manifold Insulator Replacement (LGX) 
  43. Connect the battery negative cable. Battery Negative Cable Disconnection and Connection
  44. Fill the cooling system. Cooling System Draining and Filling (Static)Cooling System Draining and Filling (GE 47716)
  45. Fill the engine oil to the proper level. Engine Oil and Oil Filter Replacement (LGX, AWD) 
  46. NOTE:

    Prelube is necessary if the engine is replaced or overhauled.

  47. If the engine is replaced with a new engine or has been overhauled, perform the Engine Prelubing procedure. Engine Prelubing
  48. Charge the A/C system. Refrigerant Recovery and Recharging
  49. Perform the throttle learn procedure. Q38 Throttle Body: Throttle/Idle Learn