Gruven heater core T-connectors

[Larryjb]

I agree. I'd replace all the plastic connectors with a coolant change, and definitely with ACDelco. Change the heater hoses as well, especially the "Y".

 

[thompsoj22]

Just crawling under and looking around on the 08 xl denali and noticed the rear heat has the same plastic disconnects/hoses. I just finished replacing the hoses/T's under the hood. Are the rear heat components/hoses that are located at the back of the vehicle failing at the same rate??

 

[Rocket Man]

Just crawling under and looking around on the 08 xl denali and noticed the rear heat has the same plastic disconnects/hoses. I just finished replacing the hoses/T's under the hood. Are the rear heat components/hoses that are located at the back of the vehicle failing at the same rate??

I’ve never heard of one those failing, in fact this is the first I’ve even heard they are back there. I wonder if it’s because the rear heaters are rarely used so the hot coolant isn’t circulating through those very often?

 

[gooffeyguy]

I'm guessing the main cause of failures on the front ones is due to either heat from the engine or them getting stressed when hoses are moved when working on the engine.

The ones in the back aren't exposed to that.

2001 Yukon SLT
2012 Yukon Denali XL
2011 Yukon Denali RIP 5/20/18

 

[kbuskill]

I’ve never heard of one those failing, in fact this is the first I’ve even heard they are back there. I wonder if it’s because the rear heaters are rarely used so the hot coolant isn’t circulating through those very often?

The heater core in the rear has coolant flowing through it all the time... same as the front... it just has a diverter for the air flow... same as the front.

My guess is that the plastic degrades more rapidly on the front ones due to the fact that they are directly above the exhaust manifold.

 

[kbuskill]

Just to update this thread... I got an email from Gruven today.

"Just FYI these are all shipping this week, they are in process of updating site now.



Sorry for delay but they did come out very nice.





Paul

www.GruvenParts.com

https://www.facebook.com/GruvenParts/ "

So I guess everyone who ordered will be recieving them soon.

 

[67RS427]

I'll go ahead and just leave this here.... Price varies from $16 to $23

3/4" HB x 3/4" HB x 1/2" HB 316 Stainless Steel Steel Tee
https://www.usplastic.com/catalog/item.aspx?itemid=135175
Banjo #HBT075-050SS

**also found this 3/4" stainless Y ($14)
https://www.leaderevaporator.com/p-458-stainless-steel-barb-y-fitting.aspx

 

[Tonyrodz]

I'll go ahead and just leave this here.... Price varies from $16 to $23

3/4" HB x 3/4" HB x 1/2" HB 316 Stainless Steel Steel Tee
https://www.usplastic.com/catalog/item.aspx?itemid=135175
Banjo #HBT075-050SS

**also found this 3/4" stainless Y ($14)
https://www.leaderevaporator.com/p-458-stainless-steel-barb-y-fitting.aspx

Think that Y would hold up to heat and automotive use? Since it was made for something completely different.

 

[kbuskill]

Think that Y would hold up to heat and automotive use? Since it was made for something completely different.

They would probably hold up BUT they are the wrong size.

The truck uses 3 different size hoses at that junction.

 

[ivin74]

Just to update this thread... I got an email from Gruven today.

"Just FYI these are all shipping this week, they are in process of updating site now.



Sorry for delay but they did come out very nice.





Paul

www.GruvenParts.com

https://www.facebook.com/GruvenParts/ "

So I guess everyone who ordered will be recieving them soon.

Ken have you received your Gruven T connectors? Post some pictures