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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) >> Removal Procedure

Removal 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. Disconnect the battery negative cable. Battery Negative Cable Disconnection and Connection
  2. Recover the refrigerant. Refrigerant Recovery and Recharging
  3. Drain the cooling system. Cooling System Draining and Filling (Static)Cooling System Draining and Filling (GE 47716)
  4. Intake Manifold Insulator Remove - Intake Manifold Insulator Replacement (LGX) .
  5. Remove 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)
  6. Remove the air cleaner assembly. Air Cleaner Assembly Replacement (LGX) .
  7. Remove the front compartment fuse block. Front Compartment Fuse Block Housing Replacement (With Out KlL9)Front Compartment Fuse Block Housing Replacement (With KL9)
  8. Fig 1: Engine Control Module Electrical Connector
    GM4167076Courtesy of GENERAL MOTORS COMPANY
  9. Remove the battery terminal from the jump start post.
  10. Engine Control Module Electrical Connector - Disconnect
  11. Reposition the engine harness on the engine.
  12. Fig 2: Radiator Inlet Hose (LGX)
    GM4093189Courtesy of GENERAL MOTORS COMPANY
  13. Radiator Inlet Hose @ Water Outlet Disconnect
  14. Fig 3: Radiator Surge Tank Inlet Hose (LGX)
    GM4092953Courtesy of GENERAL MOTORS COMPANY
  15. Radiator Surge Tank Inlet Hose @ Engine Coolant Air Bleed Pipe Disconnect
  16. Fig 4: Radiator Outlet Hose
    GM4105036Courtesy of GENERAL MOTORS COMPANY
  17. Radiator Outlet Hose @ Water Pump Disconnect
  18. Fig 5: Heater Inlet Hose
    GM4167258Courtesy of GENERAL MOTORS COMPANY
  19. Heater Inlet Hose @ Heater Core Disconnect
  20. Fig 6: Heater Outlet Hose
    GM4167273Courtesy of GENERAL MOTORS COMPANY
  21. Heater Outlet Hose @ Heater Core Disconnect
  22. Heater Outlet Hose @ Radiator Surge Tank Disconnect
  23. Fig 7: Fuel Line At Fuel Feed Pipe
    GM4167305Courtesy of GENERAL MOTORS COMPANY
  24. Fuel Line @ Fuel Feed Pipe Disconnect - Fuel Feed Pipe Replacement (Fuel Tank To Engine LGX)Fuel Feed Pipe Replacement (LGX at Engine)
  25. Evaporative Emission Canister Purge Tube Remove - Evaporative Emission Canister Purge Tube Replacement (LGX)
  26. Fig 8: Power Brake Booster Vacuum Sensor
    GM4066216Courtesy of GENERAL MOTORS COMPANY
  27. Power Brake Booster Vacuum Sensor - Disconnect
  28. Using mechanics wire, support the radiator assembly to the vehicle body.
  29. Fig 9: Air Conditioning Compressor Hose
    GM4088992Courtesy of GENERAL MOTORS COMPANY
  30. Air Conditioning Compressor Hose @ Air Conditioning Compressor Disconnect - Air Conditioning Compressor Hose Replacement (LGX)
  31. Disconnect and reposition harness as necessary.
  32. Front Compartment Lower Noise Shield - Remove - Front Compartment Lower Noise Shield Replacement (AWD)
  33. Engine Lower Front Splash Shield Remove - Front Wheelhouse Splash Shield Replacement (AWD)
  34. Transmission Fluid Cooler Pipe @ Radiator Assembly Disconnect - Transmission Fluid Cooler Inlet and Outlet Pipe Replacement (LGX With AWD, Without V03)
  35. NOTE:

    The engine, transmission and if equipped with AWD, the transfer case is removed as an assembly from the vehicle. The following two steps will prepare the transmission and if equipped with AWD, the transfer case for removal of the assembly.

  36. Prepare the transmission for removal. Transmission Replacement (M5N with LGX Engine)
  37. Prepare the transfer case for removal. Transfer Case Assembly Replacement
  38. Catalytic Converter Remove - Catalytic Converter Replacement - Left Side (LGX) , and Catalytic Converter Replacement - Right Side (LGX)
  39. NOTE:

    Removing the powertrain assembly from the vehicle could cause an unstable balance condition with the vehicle body on the vehicle hoist. Securing the vehicle body to the hoist is necessary.

  40. Secure the vehicle body to the vehicle hoist using suitable straps or binders.
  41. NOTE:

    The powertrain assembly will be removed from vehicle on the drivetrain and front suspension frame. In the next step, only perform the necessary procedures required to remove the powertrain assembly.

  42. Remove 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) .
  43. Lower the powertrain onto a suitable support table.
  44. Secure the powertrain to the support table using straps and binders.
  45. With the aid of an assistant, carefully raise the body from the frame.
  46. Ensure when raising the body the following items are clear from the frame:
    • Vacuum lines
    • Steering knuckles
    • Electrical wiring harnesses
    • Oil cooler lines
  47. Separate the engine from the transmission. Transmission Replacement (M5N with LGX Engine) .