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Home >> Cadillac >> 2021 >> CT4 Sport, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 57 (Engine Heating And Cooling - Repair Instructions (1 Of 2)) >> Repair Instructions >> Cooling System Draining and Filling (L3B Static Fill) >> Draining Procedure (Engine Radiator)

Draining Procedure (Engine Radiator)

WARNING: This page is about a different car, the 2022 Cadillac CT4. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:

With a pressurized cooling system, the coolant temperature in the radiator can be considerably higher than the boiling point of the solution at atmospheric pressure. Removal of the surge tank cap, while the cooling system is hot and under high pressure, causes the solution to boil instantaneously with explosive force. This will cause the solution to spew out over the engine, the fenders, and the person removing the cap. Serious bodily injury may result.

  1. GM5318373

    Radiator Surge Tank Cap (1) - Remove

  2. Raise and support the vehicle. Lifting and Jacking the Vehicle
  3. GM5407645

    Front Bumper Fascia Center Air Deflector Screw (1) - Remove [10x]

  4. GM5468709

    Front Bumper Fascia Center Air Deflector Screw (1) - Remove [3x]

  5. GM5407644

    Front Bumper Fascia Center Air Deflector Screw (1) - Remove [6x]

  6. Front Bumper Fascia Center Air Deflector Bolt (2) - Remove [5x]
  7. Front Bumper Fascia Center Air Deflector Retainer (3) - Remove [2x]
  8. GM5407648

    Pull the front bumper fascia center air deflector (1) rearward and down from the front bumper fascia.

  9. Place a drain pan under the drain cock.
  10. GM5313433

    Radiator Drain Cock (1) - Open

  11. Drain the cooling system.
  12. Radiator Drain Cock (1) - Close
  13. GM5407648

    Front Bumper Fascia Center Air Deflector (1) - Install

  14. GM5407644

    Front Bumper Fascia Center Air Deflector Retainer (3) - Install [2x]

    15. CAUTION:

    Refer to Fastener Caution .

  15. Front Bumper Fascia Center Air Deflector Bolt (2) - Install and tighten [5x] - Fastener Specifications
  16. Front Bumper Fascia Center Air Deflector Screw (1) - Install and tighten [6x] - Fastener Specifications
  17. GM5468709

    Front Bumper Fascia Center Air Deflector Screw (1) - Install and tighten [3x] - Fastener Specifications

  18. GM5407645

    Front Bumper Fascia Center Air Deflector Screw (1) - Install and tighten [10x] - Fastener Specifications .

  19. For a complete system drain, proceed to the engine auxiliary radiator draining procedure.
  20. Remove the drain pan.
  21. Lower the vehicle.
  22. Inspect the coolant.
  23. If the coolant is discolored, perform the flushing procedure. Flushing 
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