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Home >> Cadillac >> 2021 >> CT4 Sport, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 279 (Engine Cooling System - Repair Instructions) >> Repair Instructions >> Engine Coolant Heater Exhaust Pipe Replacement >> Removal Procedure

Removal 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. 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 (LGY Static Fill) , or Cooling System Draining and Filling (LGY GE 47716) , or Cooling System Draining and Filling (LT4 Static Fill) , or Cooling System Draining and Filling (LT4 GE 47716) 
  2. GM5309180Courtesy of GENERAL MOTORS COMPANY

    Plenum Front Panel (1) - Remove - Plenum Front Panel Replacement (without Blackwing) , or Plenum Front Panel Replacement (with Blackwing)

  3. Intake Manifold Cover - Remove - Intake Manifold Cover Replacement
  4. Positive Crankcase Ventilation Hose - Remove - Positive Crankcase Ventilation Hose/Pipe/Tube Replacement
  5. Engine Wiring Harness Bracket - Remove - Engine Wiring Harness Bracket Replacement
  6. GM5318618Courtesy of GENERAL MOTORS COMPANY

    Engine Coolant Air Bleed Pipe (1) - Remove - Engine Coolant Air Bleed Pipe Replacement (LGY) , or Engine Coolant Air Bleed Pipe Replacement (LSY Auxiliary Water Pump Inlet Pipe to Engine Coolant Air Bleed Hose) , or Engine Coolant Air Bleed Pipe Replacement (LSY Engine Block to Engine Coolant Flow Control Valve) 

  7. GM5323484Courtesy of GENERAL MOTORS COMPANY

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

  8. Heater Inlet Hose (2) @Engine Coolant Heater Exhaust Pipe - Remove - Heater Inlet Hose Replacement (LSY) , or Heater Inlet Hose Replacement (LGY)
  9. Engine Coolant Air Bleed Hose (3) @Engine Coolant Heater Exhaust Pipe - Remove - Engine Coolant Air Bleed Hose Replacement (Engine Coolant Heater Exhaust Pipe to Engine Coolant Air Bleed Pipe) , or Engine Coolant Air Bleed Hose Replacement (Engine Coolant Flow Control Valve to Engine Coolant Exhaust Heater Pipe) 
  10. Turbocharger Coolant Return Hose (4) @Engine Coolant Heater Exhaust Pipe - Remove - Turbocharger Coolant Return Hose Replacement 
  11. GM5323486Courtesy of GENERAL MOTORS COMPANY

    Engine Coolant Temperature Sensor Electrical Connector (1) - Disconnect

  12. GM5323488Courtesy of GENERAL MOTORS COMPANY

    Engine Coolant Heater Exhaust Pipe Bolt (1) - Remove

  13. Hose Clamp (2) - Disengage - Hose Clamp Replacement Guidelines - Spring Type 
  14. GM5323487Courtesy of GENERAL MOTORS COMPANY

    Engine Coolant Heater Exhaust Pipe Bolt (1) - Remove

  15. Engine Coolant Heater Exhaust Pipe (3) @Engine Coolant Flow Control Valve - Remove
  16. GM5323492Courtesy of GENERAL MOTORS COMPANY

    Engine Coolant Heater Exhaust Pipe Bolt (1) - Remove [2x]

  17. Engine Coolant Manifold Gasket (2) - Remove and DISCARD
  18. Engine Coolant Heater Exhaust Pipe (3) - Remove