Draining Procedure
Caution: In order to avoid personal injury, do not remove the cap or open
the cooling system drains from a hot system. Allow the system to cool first.
- Remove the coolant cap from the surge tank.
Important: A 7.6 liter (8 qt) coolant
container will be needed.
- Place the coolant container under the radiator drain valve located at the bottom
of the right radiator end tank.
- Using a small flat-bladed screwdriver, open the drain valve and drain
the coolant.
- For
L61 vehicles, if the engine block needs to be drained, a drain valve is located at
the bottom of the water pump assembly.
Filling Procedure
Notice: All entrapped air must be purged from the powertrain cooling system before the
final coolant level can be determined. Proper coolant level is critical to avoid engine
damage.
Important: The vehicle must be level when filling the
cooling system.
- Slowly add a mixture of 50/50 DEX-COOL antifreeze and clean water to the coolant
surge tank until the level reaches the top of the Cold Fill Range surge tank seam.
Refer to
Approximate Fluid Capacities
in
General Information.
- Start the engine and check for leaks.
- Run the engine and cycle the vehicle from idle to 3,000 RPM in
30 second intervals until the engine cooling fan comes ON, the engine cooling
fan turns ON at approximately 102°C (216°F).
- Return the engine to idle, idle for 30 seconds then turn the engine
OFF.
- Add coolant to the surge tank until the level reaches the surge tank vent
port.
Important: The level in the surge tank will return into
the cold fill range once the vehicle cools.
- Install the coolant surge tank cap.