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

Removal Procedure

  1. Drain the cooling system. Cooling System Draining and Filling (GE-47716) , or Cooling System Draining and Filling (Static) 
  2. Oil Level Indicator Tube - Remove - Oil Level Indicator Tube Replacement
  3. GM5287108Courtesy of GENERAL MOTORS COMPANY

    Radiator Assembly (1) - Remove - Radiator Replacement 

  4. GM5245790Courtesy of GENERAL MOTORS COMPANY

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

  5. Radiator Inlet Hose (2) @ Engine Coolant Flow Control Valve - Remove
  6. GM5129717Courtesy of GENERAL MOTORS COMPANY

    Hose Clamp (1) - Disengage [3x] - Hose Clamp Replacement Guidelines - Spring Type 

  7. Engine Oil Cooler Coolant Inlet Hose (2) @ Engine Coolant Flow Control Valve - Remove
  8. Thermostat Bypass Hose (3) @ Engine Coolant Flow Control Valve - Remove
  9. Engine Coolant Flow Control Valve Hose (4) @ Engine Coolant Flow Control Valve - Remove
  10. GM5125694Courtesy of GENERAL MOTORS COMPANY

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

  11. GM5129722Courtesy of GENERAL MOTORS COMPANY

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

  12. Thermostat Bypass Hose (2) @ Engine Coolant Flow Control Valve - Remove
  13. GM5129723Courtesy of GENERAL MOTORS COMPANY

    Electrical Connector (1) @ Engine Coolant Flow Control Valve - Disconnect [2x]

  14. Electrical Connector (2) @ Engine Coolant Temperature Sensor - Disconnect
  15. GM5129724Courtesy of GENERAL MOTORS COMPANY

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

  16. GM5129727Courtesy of GENERAL MOTORS COMPANY

    Engine Coolant Flow Control Valve (1) - Remove

  17. Water Outlet Seal (2) - Remove and DISCARD