Gurggling Noise inside dash 2007 Town Car

How do I get the gurggling noise repaired?

More detail about the noise would help here. I suggest that you start with a cooling system test to find out where the engine cooling system leak is. Once you find and fix that, bleed all the air out and the gurgling will stop.

A good place to start would be to check the coolant level in the overflow tank under the hood…

There is no overflow tank on this car. It has only a pressurized degas reservoir.

The degas bottle system works pretty well unless someone installs an aftermarket thermostat without a jiggle valve.