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Home >> Cadillac >> 2021 >> CT4 Sport, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 279 (Engine Cooling System - Repair Instructions) >> Repair Instructions >> Thermostat Bypass Hose Replacement >> 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. GM5122784Courtesy of GENERAL MOTORS COMPANY

    Thermostat Bypass Hose (1) - Install

  2. GM5122781Courtesy of GENERAL MOTORS COMPANY

    Thermostat Bypass Hose (2) @Engine Coolant Flow Control Valve - Install

  3. Hose Clamp (1) @Engine Coolant Flow Control Valve - Engage - Hose Clamp Replacement Guidelines - Spring Type 
  4. GM5122780Courtesy of GENERAL MOTORS COMPANY

    Thermostat Bypass Hose (2) @Engine Coolant Thermostat Housing Pipe - Install

  5. Thermostat Bypass Hose (2) @Engine Oil Cooler - Install
  6. Hose Clamp (1) - Engage [2x] - Hose Clamp Replacement Guidelines - Spring Type 
  7. GM5122778Courtesy of GENERAL MOTORS COMPANY

    Automatic Transmission Fluid Cooling Exchanger (2) @Thermostat Bypass Hose - Install

  8. Hose Clamp (1) - Engage - Hose Clamp Replacement Guidelines - Spring Type 
  9. Fill 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) 
  10. Start the engine and check for leaks.