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.