haha mines not that bad. It's just got hairline cracks in it, not chunks missing.

 

That will change VERY soon!!!

 

Did my heater core about a year and a half ago. Dropped the steering column, took the whole dash back about 2-3 feet and pulled the whole hvac box out. The core swap itself is easy enough, it's just getting to the thing that's a pain. Since it's summer I'd just bypass it until it right before you actually need it/feel like doing the work. Just my .02

 

You might want to think about hitting all of them with some fiberglass resin and sanding/painting it with a flat black or dark gray paint while you have the dash out. Just remember that if you put pressure on the top of the dashboard it will crumble like a dorito. For a strength comparison, place a dorito on the table and push on it with your finger, that is how strong your dashboard is.
I took the whole dash out because I didn't want to have to recharge the A/C, you can pull the HVAC box back enough to get the heater core in without disconnecting the refrigerant lines.

 

Well, I was about to tackle this project tomorrow but now I'm hardly getting the noise at all. It sloshed a little this morning and quit and when I left work it didn't do it at all. I'm still skeptical that it is the heater core as I do not have a coolant smell when the heater is on and the only time it fogs up is if it's really humid and rainy outside. Does it take time after you burp the system for it to take effect? I've heard that if the system is low on coolant it will make this sloshing sound too. Maybe something is plugged up? I don't know, I really don't want to tear into the dash and find out it's not the problem.

 

bypass the heater core then and see if you coolant issue stops...

 

My Ram does this. I don't lose any coolant whatsoever though.

 

Yeah see I think everyone experiences a bad heater core in different ways. Mine doesn't have a bad smell when the heater is on or a wet carpet but I'm losing coolant without any leaks anywhere and it's making this noise. Right now it's not making the noise at all. It's made this noise for 3 straight weeks and now it stopped cold turkey. I'm guessing it's because I burped the system and put more coolant in it so there isn't room for air bubbles to get in.

 

My car has coolant on the driver front and back floor wat is the problem. I also see coolant sitting on top the transmission

 

Yeah mine has pin holes in it too. It was getting hot while towing. So I just dropped a 180 stat in and deal with it. Temp never goes over 195 even under extreme loads. It used to go 220ish cause air in the system. But a 180 stat is kinda a bandade for it if it's getting hot from the air in the system until you want to tackle the problem