CTS RWD V8-6.2L SC (2009)
Vac N Fill Procedure
Note: To prevent boiling of the coolant/water mixture in the vehicles cooling system, do not apply vacuum to a cooling system above 49 degrees
C (120 degrees F). The tool will not operate properly when the coolant is boiling.
1. Install the J 46143 - Cooling System Adapter onto the charge air cooler reservoir fill neck.
Warning
To avoid being burned, do not remove the charge air coolant cap while the system is hot. The cooling system will release scalding fluid and steam under
pressure if charge air coolant cap is removed while the system is still hot.
2. Attach the Vac N Fill cap to the J 46143 - Cooling System Adapter.
3. Attach the vacuum gage assembly to the Vac N Fill cap.