Draining Procedure
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2003 GMC Savana Special, 2003 GMC Savana Camper Special, 2003 GMC Savana, 2003 Chevrolet RV Cutaway, and 2003 Chevrolet Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
Tools Required
- J 26568 Coolant and Battery Tester
- J 38185 Hose Clamp Pliers
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.
CAUTION:
If the procedure below is not followed a low or high coolant level condition and/or vehicle damage could result.
Important: Draining the cooling system with the pressure cap installed will siphon the coolant from the overflow tank.
- Raise and support the vehicle.
- Place a drain pan under the lower radiator hose.
- Using the J 38185 , reposition the lower radiator hose clamp.
- Remove the lower radiator hose from the radiator.
- Drain the cooling system.
- Remove the coolant pressure cap.
- 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 .