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Home >> Chevrolet >> 2021 >> Trailblazer L >> Repair and Diagnosis >> Engine Mechanical >> Cooling Fan >> Engine Heating And Cooling System >> Repair Instructions >> Engine Coolant Flow Control Valve Replacement (L3T) >> Installation Procedure

Installation Procedure

  1. GM5129727Courtesy of GENERAL MOTORS COMPANY

    Water Outlet Seal (2) - Install NEW

  2. Engine Coolant Flow Control Valve (1) - Install
  3. GM5129724Courtesy of GENERAL MOTORS COMPANY

    Engine Coolant Flow Control Valve Bolt (1) - Install [5x] - Engine Coolant Flow Control Valve Installation

  4. GM5129723Courtesy of GENERAL MOTORS COMPANY

    Electrical Connector (2) @ Engine Coolant Temperature Sensor - Connect

  5. Electrical Connector (1) @ Engine Coolant Flow Control Valve - Connect [2x]
  6. GM5129722Courtesy of GENERAL MOTORS COMPANY

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

  7. Hose Clamp (1) - Engage - Hose Clamp Replacement Guidelines - Spring Type 
  8. GM5125694Courtesy of GENERAL MOTORS COMPANY

    Evaporative Emission Canister Purge Pump (1) - Install - Evaporative Emission Canister Purge Pump Replacement

  9. GM5129717Courtesy of GENERAL MOTORS COMPANY

    Engine Coolant Flow Control Valve Hose (4) @ Engine Coolant Flow Control Valve - Install

  10. Thermostat Bypass Hose (3) @ Engine Coolant Flow Control Valve - Install
  11. Engine Oil Cooler Coolant Inlet Hose (2) @ Engine Coolant Flow Control Valve - Install
  12. Hose Clamp (1) - Engage [3x] - Hose Clamp Replacement Guidelines - Spring Type 
  13. GM5245790Courtesy of GENERAL MOTORS COMPANY

    Radiator Inlet Hose (2) @ Engine Coolant Flow Control Valve - Install

  14. Hose Clamp (1) - Engage - Hose Clamp Replacement Guidelines - Spring Type 
  15. GM5287108Courtesy of GENERAL MOTORS COMPANY

    Radiator Assembly (1) - Install - Radiator Replacement 

  16. Oil Level Indicator Tube - Install - Oil Level Indicator Tube Replacement
  17. Fill the cooling system. Cooling System Draining and Filling (GE-47716) , or Cooling System Draining and Filling (Static) 
  18. Start the engine and check for leaks.