Heater core hose to water pump

[Scottydoggs]

hose placement means nothing one is in the other is out, the heater core dont care.

gurgling means theres air trapped in the heater core. so pull one hose off hold it up and fill the core via the hose. pop it back on the water pump. problem solved.

 

[mijohnst]

Thanks you Scotty! I'll do that.

 

[mijohnst]

So, I was going to do Scotty's suggestion, but after swapping my lines from what they were, my core stopped gurgling. The left core port goes to the left water pump outlet and the right to the right. I pulled this image off a YouTube and it shows the correct layout.

 

[2006]

I have the same setup in my 2006 Tahoe. Is the hose number 3 a molded hose? I replaced mine with a regular hose and it seems like it might kink in the bend near the pump. If it is molded, what is the part number for it? I can not find one.