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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 (LSY GE 47716) >> Draining Procedure

Draining Procedure

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.

WARNING:

To avoid being burned, do not remove the radiator cap or surge tank cap while the engine is hot. The cooling system will release scalding fluid and steam under pressure if radiator cap or surge tank cap is removed while the engine and radiator are still hot.

  1. Park the vehicle on a level surface.
  2. GM5318373

    Radiator Surge Tank Cap (1) - Remove

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

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

  5. GM5468709

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

  6. GM5407644

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

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

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

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

    Radiator Drain Cock (1) - Open

  12. Drain the cooling system.
  13. Inspect the coolant.
  14. If the coolant is discolored, perform the flushing procedure. Flushing 
  15. Radiator Drain Cock (1) - Close
  16. Remove the drain pan.
  17. GM5407648

    Front Bumper Fascia Center Air Deflector (1) - Install

  18. GM5407644

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

    19. CAUTION:

    Refer to Fastener Caution .

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

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

  22. GM5407645

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

  23. Remove the support and lower the vehicle.
    24. NOTE:

    The vehicle is quipped with an automatic coolant service fill (ACSF) feature that assists with removing air while filling the cooling system.

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