Hello and welcome to just answer Chrysler. There is a bleed screw near the upper radiator hose on the engine. You should loosen this screw to purge the system of air. Here is the filling procedure from the factory service manual for you to read. (note you probably don't need the special funnel)Hope this information helps and let me know if you need more assistance with this,
WARNING: MAKE SURE ENGINE COOLING SYSTEM IS COOL BEFORE REMOVING PRESSURE CAP OR ANY HOSE. SEVERE PERSONAL INJURY MAY RESULT FROM ESCAPING HOT COOLANT. THE COOLING SYSTEM IS PRESSURIZED WHEN HOT.
CAUTION: Do not use well water, or suspect water supply in cooling system. Use only a 50/50 mixture of the specified ethylene glycol type antifreeze/coolant and distilled water. (Refer to LUBRICATION & MAINTENANCE/FLUID TYPES - DESCRIPTION).
NOTE: COOLING SYSTEM FILL PROCEDURE IS CRITICAL TO OVERALL COOLING SYSTEM PERFORMANCE.
WARNING: WHEN INSTALLING DRAIN HOSE TO AIR BLEED VALVE, ROUTE HOSE AWAY FROM ACCESSORY DRIVE BELTS, ACCESSORY DRIVE PULLEYS, AND ELECTRIC COOLING FAN MOTORS.
NOTE: IT IS IMPERATIVE THAT THE COOLING SYSTEM AIR BLEED VALVE BE OPENED BEFORE ANY COOLANT IS ADDED TO THE COOLING SYSTEM. FAILURE TO OPEN THE BLEED VALVE FIRST WILL RESULT IN AN INCOMPLETE FILL OF THE SYSTEM.
CAUTION: Do not mix coolants. If coolant is used other than specified, a reduction in corrosion protection will occur.
NOTE: The engine cooling system will push any remaining air into the coolant bottle within about an hour of normal driving. As a result, a drop in coolant level in the pressure bottle may occur. If the engine cooling system overheats and pushes coolant into the overflow side of the coolant bottle, this coolant will be sucked back into the cooling system ONLY IF THE PRESSURE CAP IS LEFT ON THE BOTTLE. Removing the pressure cap breaks the vacuum path between the two bottle sections and the coolant will not return to cooling system.
NOTE: The coolant bottle has two chambers. Coolant will normally only be in the inboard (smaller) of the two. The outboard chamber is only to recover coolant in the event of an overheat or after a recent service fill. The outboard chamber should normally be empty. If there is coolant in the overflow side of the coolant bottle (after several warm/cold cycles of the engine) and coolant level is within MIN and MAX marks, disconnect the end of the overflow hose at the fill neck and lower it into a clean container. Allow coolant to drain into the container until emptied. Reconnect overflow hose to fill neck.