gurgling water noise in glove box area???

I have a 1998 Didge Ram 1500 4x4 and I am hearing a watery gurgling noise coming from the glove box area? Any ideas on what that is and is it a major problem or fix?

Sounds like air in the system. Remove the rad cap. Park on an incline, if you can get the passenger side higher its better. Start and run it and let it warm up. It should "burp". Probably have to add some antifreeze.

Definitely air trapped in the heater core... Agree that you have to get the front end of the truck up high enough to get it out. I had to replace my water pump and have not yet had a chance to fix this issue with mine but it does the same thing.