Heater leaking?

[350chevy719]

I have a 95 k1500 350 tbi. I went to turn the heat on the other day and noticed it poured some water from under passenger side dash. Doesnt do it with heat off or a/c on, so id assume its directly related to the heating system. Can somebody help? Anybody have this problem?

 

[df2x4]

Is it coolant or just water? Does it do it continuously, or just after sitting when you first turn it on? If the latter, you might just have the infamous cowl rain leak. Check this thread out.

http://www.gmt400.com/forum/showthread.php?15928-the-mysterious-interior-rain-leak

 

[350chevy719]

Well I know it's not that because it does it when I turn the heat on only. I don't have a leak when's its raining...at least not there. It does look a tad "oily" so I'd say yes it is antifreeze/water