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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 174 (Engine Cooling System) >> Repair Instructions >> Cooling System Draining and Filling (Static) >> Draining Procedure

Draining Procedure

WARNING: This page is about a different car, the 2017 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.
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. Place the vehicle on a level surface.
  2. Fig 1: Surge Tank Cap
    GM4051047Courtesy of GENERAL MOTORS COMPANY
  3. Remove the radiator surge tank cap. (1)
  4. Open the lower surge tank cap. (2)
  5. Raise and support the vehicle. Lifting and Jacking the Vehicle (ATS)Lifting and Jacking the Vehicle (ATS-V) .
  6. Remove Front Compartment Air Deflector.Front Compartment Air Deflector Replacement (V Series)
  7. Place a drain pan under the right side of the radiator.
  8. Fig 2: Radiator Drain Plug
    GM4051027Courtesy of GENERAL MOTORS COMPANY
  9. Slowly loosen the radiator drain plug (1).
  10. Drain the cooling system.
  11. Inspect the coolant.
  12. Follow the appropriate procedure based on the condition of the coolant.
    • Normal in appearance-Follow the filling procedure.
    • Discolored-Follow the flush procedure. Refer to Flushing .
  13. CAUTION:

    Refer to Fastener Caution .

  14. Tighten the radiator drain plug.
  15. Install Front Compartment Air Deflector.Front Compartment Air Deflector Replacement (V Series)
  16. Lower the vehicle.