Heater Hose Blew Out

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Doubeleive

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Well if the rest of the T breaks off then I will switch to the billet style over the OEM plastic. As u stated...my option is a quick fix that can be done as you wait on replacement items. [emoji41]


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Actually I replaced mine preemptively when they were 7 years old, with new oem T's and hose's.
 

new2yukon

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if anyone decides to go with the Dorman be sure it is the one with the part number ending with "CD" which is "Changed Design" which supposedly has some kind of improvement made versus the original dorman.
Looked my order up on RA. Bought dorman T and Gates straight fitting. March 2014. And the Dorman wasn't w/ the CD notation.

Maybe need to look at replacement?
 

Doubeleive

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I don't think they did the changed until the last year or maybe 2, but like mark said oem is best the T's are not that much like $25 each unless you want to be a baller and get the Gruven metal ones
 
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Joseph Garcia

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Update.

I replaced both 'T's with new GM 'T's, and it was still a royal PIA. I purchased 2 'quick disconnect' tools, but neither on worked, so I might as well have flushed the money down the toilet and saved the commute time to the parts store. I had to cut all of the quick disconnects with a hacksaw blade to remove them in the method that I previously described. To accomplish this task, I had to stand on a step stool, bend over the passenger side front fender, lean down over the motor, and then twist my upper body to the left, to get my arms in a position to access the 'T's. This was real interesting, to say the least, as I had my left shoulder replaced 8 months ago, and it is still healing.

Needless to say, as an old man, I am sore from finger tips to toes today. I even cut my fingers in 2 places, as a result of having to use the bare hacksaw blade. But, a PIA job needs to have the subsequent aches, cuts, and bruises, in order to justify it being a PIA job. :)

One thing to note for folks performing this task in the future. Wear gloves, as the sound deadening material wrapping the underside of the cowl, over the 'T's has a fiberglass material, similar to old home insulation that gets into your skin, and the back of my hands still itch from the contact with the material.

I've also replaced both radiator hoses and the coolant bypass hose, all of which were original parts on the truck with 2007 date codes. I used new screw clamps, replacing the original spring clamps. I am now waiting delivery of both heater hoses, scheduled for tomorrow.
 
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Doubeleive

Wes
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Update.

I replaced both 'T's with new GM 'T's, and it was still a royal PIA. I purchased 2 'quick disconnect' tools, but neither on worked, so I might as well have flushed the money down the toilet and saved the commute time to the parts store. I had to cut all of the quick disconnects with a hacksaw blade to remove them in the method that I previously described. To accomplish this task, I had to stand on a step stool, bend over the passenger side front fender, lean down over the motor, and then twist my upper body to the left, to get my arms in a position to access the 'T's. This was real interesting, to say the least, as I had my left shoulder replaced 8 months ago, and it is still healing.

Needless to say, as an old man, I am sore from finger tips to toes today. I even cut my fingers in 2 places, as a result of having to use the bare hacksaw blade. But, a PIA job needs to have the subsequent aches, cuts, and bruises, in order to justify it being a PIA job. :)

One thing to note for folks performing this task in the future. Wear gloves, as the sound deadening material wrapping the underside of the cowl, over the 'T's has a fiberglass material, similar to old home insulation that gets into your skin, and the back of my hands still itch from the contact with the material.

I've also replaced both radiator hoses and the coolant bypass hose, all of which were original parts on the truck with 2007 date codes. I used new screw clamps, replacing the original spring clamps. I am now waiting delivery of both heater hoses, scheduled for tomorrow.
Ya, I guess I should have mentioned that a pair of long needle nose pliers will work to snap those sections off I took it at as a given that most people would use something of that nature they are a pia, however putting them back together is much easier, you got the hard part done.
 
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Joseph Garcia

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I meant to post: put some lubricant on the fitting O-rings and they will go on even easier...

Somebody mentioned that suggestion in one of the posts on this thread, and I did clean and then lube both sides of the fittings and o-rings with a 90% silicon lube, prior to installing.
 

RTLINGR2

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Hi Folks,

I just had a heater hose blow out on my 07 Yukon XL Denali. As the photo shows, it appears to have literally 'torn' itself off, right at the back side of the crimped coupling on the end of the hose, as it looks like there is still hose within the crimped coupling.

Question for you.... Do I need a special tool to get the crimped connector off of the plastic nipple of the coolant distribution block? If so, where is the best place to buy the tool? Part number?

Does it also make sense to change out both heater hoses, along with both radiator hoses? Any other coolant-containing hoses that should be changed out, as well?

All suggestions welcome.

Thanks in advance.

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I would replace the tee's as well. You can by the tee's and the hose end quick couplers all individually without hoses. If never replaced the hoses i would change those too. If buying aftermarket use Gates. DON'T use the Doorman ones. They're junk and don't fit properly. Other than that use the OE ones. I like the idea of the alluminum ones the other members posted up as well.
 

Rocket Man

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I would replace the tee's as well. You can by the tee's and the hose end quick couplers all individually without hoses. If never replaced the hoses i would change those too. If buying aftermarket use Gates. DON'T use the Doorman ones. They're junk and don't fit properly. Other than that use the OE ones. I like the idea of the alluminum ones the other members posted up as well.
Lol see post #46.
 
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I meant to post: put some lubricant on the fitting O-rings and they will go on even easier...
I keep a tube of K-Y in the top drawer of my tool box just for use on o-rings.

The water based lube won't harm or cause the rubber to deteriorate/break down like other lubes.

My wife just thinks I'm cheating on her.....lol

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Joseph Garcia

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I would replace the tee's as well. You can by the tee's and the hose end quick couplers all individually without hoses. If never replaced the hoses i would change those too. If buying aftermarket use Gates. DON'T use the Doorman ones. They're junk and don't fit properly. Other than that use the OE ones. I like the idea of the alluminum ones the other members posted up as well.


At first, I was not going to replace the 'T's, since it was such a PIA to remove just the heater hose couplings from the 'T's. But, after many folks here replied, strongly recommending that I replace the 'T's as well, I did go ahead and replace the 'T's with GM parts, and not Dorman parts (again, at the strong recommendation of folks here).

That is what makes this Forum so powerful and helpful. Knowledge is power, and it helps to not have to do the same job twice or more, because it was not done 'completely' the first time.
 
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Joseph Garcia

Joseph Garcia

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Sorry, I didnt see there were multiple pages. Did not mean to step on toes or repeat anything. Wasn't till i saw your reponse that i saw 6 pages. Thought i read them all. Where is the post # located on the page or do you have physically count?

No toes stepped on, for sure!!

Better to have multiple good recommendations, than to be missing the good recommendation in the first place.
 

Bear77

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Great info in this thread! I just seen that I have the same problem as this...another thing to add to the list of things to fix!


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Rocket Man

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Sorry, I didnt see there were multiple pages. Did not mean to step on toes or repeat anything. Wasn't till i saw your reponse that i saw 6 pages. Thought i read them all. Where is the post # located on the page or do you have physically count?
It’s ok. I was just messin, I figured you hadn’t got to the end of the thread get. Post #’s are at the right of the black bar at the top of every post, across from where the date and time of the post is.
 

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