Draining Procedure
WARNING: This page is about a different car, the 2016 GMC Acadia, 2016 Chevrolet Traverse, and 2016 Buick Enclave. 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.
- Remove the radiator cap.
- Attach the venturi assembly to the vacuum tank.
- Attach a shop air hose to the venturi assembly.
Ensure the valve on the venturi assembly is closed.
- Attach the vacuum hose to the vacuum tank.
- Attach the extraction hose to the vacuum hose.
- Insert the extraction hose into the radiator cap opening and into the radiator until the extraction hose contacts the bottom of the radiator end tank.
- Open the valve on the venturi assembly to start a vacuum draw.
- Use the extraction hose to draw out coolant until the radiator is empty.
- The vacuum tank has a drain valve on the bottom of the tank. Open the valve to drain coolant from the vacuum tank into a suitable container for disposal.
- If a complete engine block drain is required, remove the engine block drain plug.
- Inspect the coolant.
- 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 .