Draining Procedure
WARNING: This page is about a different car, the 2006 Pontiac Montana SV6, 2006 Chevrolet Uplander, and 2006 Buick Terraza. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
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.
IMPORTANT:
Draining the cooling system with the pressure cap installed will siphon the coolant from the overflow tank.
- Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
- Place a drain pan under the drain cock.
- Open the radiator drain cock.
- Drain the cooling system.
- 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 .