It should NOT be coolant coming out of the drain hole-it should be clear water. Catch the liquid in something and look at it and determine what it is.

I don't think a bad heater core would leak out of that drain hole. When i had a bad heater core it leaked onto the inside floor.

1. Is the air conditioner on? 2.What happens when you turn the heater on?

 

this indicates the heater core or hoses/tubes to it are leaking, the coolant will leak into the HVAC evap drain pan and out the drain tube.
Please have a read prior to changing the heater core...

| Repair Guides | Heater Core | Removal & Installation | AutoZone.com

 

Both the air conditioner and heat work the way that the are supposed to. No changes that I have noticed, anyway.

 

That hose drains a condensate pan under the condenser coil and the heater core, so it is possible that "something is broken". It is going to cost you a bundle to find out what since they will have to take the dashboard apart to look at it.

 

It looks like most people think that it is your heater core. Changing it might be a task-but if you have a repair manual it will help(they have step by step instruction). You will have to remove the center console to get to it & also unbolt 2 bolts against the firewall.

I would REALLY MAKE SURE this is the problem before I start taking it apart. Please keep us informed as you progress?

 

Heater core.

 

Definitely! I'm not expert, for sure, so I'll need to get my hands on a repair manual somehow if I decide to change the heater core myself. Is there a way that I could confirm that it is indeed the heater core?

 

Just read the link I posted in #22 there is a verbatim how to change the heater core, so no manual required, oh and you're welcome, thanks for noticing!

 

Sorry about that. I'll definitely take a look at it.

 

I suppose it could have been overlooked!! I just wanted to ensure you had an idea of what you're up against!