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Home >> Cadillac >> 2021 >> CT4 Sport, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 257 (Heating, Ventilation, And Air Conditioning) >> Repair Instructions >> Heater Coolant Pump Replacement (RWD with LGY) >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2022 Cadillac CT5. However, it is still accessible from the selected car via links, so may be relevant.
  1. GM5552321Courtesy of GENERAL MOTORS COMPANY

    Heater Coolant Pump (2) - Install

  2. Connect the electrical connector.
  3. CAUTION:

    Refer to Fastener Caution .

  4. Heater Water Auxiliary Pump Bolt (1) - Install and tighten to 9 N.m (80 lb in)
  5. GM5551111Courtesy of GENERAL MOTORS COMPANY

    Heater Outlet Pipe (2) @ Heater Coolant Pump - Install - Heater Outlet Pipe Replacement (RWD with LGY) 

  6. GM5550059Courtesy of GENERAL MOTORS COMPANY

    Heater Outlet Hose (2) @ Heater Coolant Pump - Install - Heater Outlet Hose Replacement (RWD with LGY Heater Coolant Pump to Heater Outlet Pipe) 

  7. GM5357424Courtesy of GENERAL MOTORS COMPANY

    Front Compartment Air Deflector (1) - Install - Front Compartment Air Deflector Replacement (RWD)

  8. Fill the cooling system to the proper level. Cooling System Draining and Filling (LGY Static Fill) , or Cooling System Draining and Filling (LGY GE 47716)
  9. Start the engine and check for coolant leaks.