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Home >> Cadillac >> 2021 >> CT4 Sport, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 57 (Engine Heating And Cooling - Repair Instructions (1 Of 2)) >> Repair Instructions >> Auxiliary Water Pump Inlet Pipe Replacement (LSY) >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2022 Cadillac CT4. However, it is still accessible from the selected car via links, so may be relevant.
  1. Drain the cooling system. Cooling System Draining and Filling (LSY GE 47716) , or Cooling System Draining and Filling (LSY Static Fill) , or Cooling System Draining and Filling (LSY with V03 Static Fill) , or Cooling System Draining and Filling (LSY with V03 GE 47716) 
  2. GM5405472

    Air Cleaner Outlet Duct Clamp (1) - Loosen [2x]

  3. Evaporative Emission Canister Purge Tube (2) - Disconnect - Plastic Collar Quick Connect Fitting Service
  4. Positive Crankcase Ventilation Tube (3) - Disconnect - Plastic Collar Quick Connect Fitting Service
  5. Disconnect the electrical connector.
  6. GM5405476

    Air Cleaner Outlet Duct (1) - Remove

  7. Disconnect the electrical connector and remove all wiring harnesses from the air cleaner assembly.
  8. GM5405481

    Air Cleaner Bolt (1) - Remove

  9. GM5405482

    Air Cleaner Assembly (1) - Remove

  10. GM5323963

    Hose Clamp (1) - Disengage - Hose Clamp Replacement Guidelines - Spring Type 

  11. Radiator Outlet Hose (2) @ Water Pump - Remove
  12. GM5314511

    Retainer Spring (1) - Release

  13. Charge Air Cooler Inlet Air Tube (2) @ Turbocharger (3) - Remove
  14. GM5323717

    Hose Clamp (1) - Disengage - Hose Clamp Replacement Guidelines - Spring Type 

  15. Auxiliary Water Pump Inlet Pipe (2) @ Water Pump - Remove
  16. GM5323953

    Engine Wiring Harness Retainer (1) @ Engine Wiring Harness Bracket - Remove [3x]

  17. Electrical Connector (2) @ Electric Water Pump - Disconnect
  18. GM5314789

    Water Pump Bolt (1) - Remove

  19. GM5314798

    Water Pump Bolt (1) - Remove [2x]

  20. GM5314807

    Hose Clamp (1) - Disengage - Hose Clamp Replacement Guidelines - Spring Type 

  21. NOTE:

    Do NOT remove the auxiliary water pump outlet upper hose (3) from the engine coolant thermostat housing inlet pipe.

  22. Remove the electric water pump (2) from the auxiliary water pump outlet upper hose (3).
  23. GM5323976

    Electric Water Pump (1) - Remove

  24. GM5571392

    Disconnect and reposition the heated oxygen sensor electrical connector (1).

  25. GM5309985

    Turbocharger Heat Shield Bolt (1) - Remove [3x]

  26. GM5309997

    Turbocharger Heat Shield (1) - Remove

  27. GM5310138

    Catalytic Converter Heat Shield Bolt (1) - Remove [2x]

  28. Catalytic Converter Heat Shield Nut (2) - Remove
  29. GM5310178

    Catalytic Converter Heat Shield (1) - Remove

  30. GM5124218
    NOTE:

    The compressor air intake turbocharger is removed for illustration purposes only.

    Hose Clamp (1) - Disengage [2x] - Hose Clamp Replacement Guidelines - Spring Type 

  31. Heater Water Auxiliary Pump Inlet Hose (2) @ Auxiliary Water Pump Inlet Pipe - Remove
  32. Engine Coolant Air Bleed Hose (3) @ Auxiliary Water Pump Inlet Pipe - Remove
  33. GM5124222
    NOTE:

    The compressor air intake turbocharger is removed for illustration purposes only.

    Water Pump Inlet Pipe Bolt (1) - Loosen

  34. GM5124226
    NOTE:

    The compressor air intake turbocharger is removed for illustration purposes only.

    Water Pump Inlet Pipe Bolt (1) - Remove

  35. GM5571414

    Remove the auxiliary water pump inlet pipe (1) by maneuvering towards the front of the vehicle.