Heater Hose Blew Out

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Rocket Man

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So why not use the dorman replacement T?

Hmmmm....I replaced my oem about 4yrs ago with dorman. So far no issues....

Just wondering.
The Dorman ones seem to fail in a few years according to forum members who have used them. They’re probably made with an inferior plastic. The OEM ones tend to last 10 years or more.
 

denalianyone

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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.

View attachment 249376

View attachment 249378
Just use a Dremel tool to cut the oem clamp bracket and there is enough slack to use the existing hose. Then buy a small set screw hose clamp from your local hardware store. Tighten it real tight and walla. Same thing happen to me and that was the fix. Don’t go out and buy another cheap plastic t fitting


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Doubeleive

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if you wanted to delete the rear heat for some reason yuo could use the striaght
Just use a Dremel tool to cut the oem clamp bracket and there is enough slack to use the existing hose. Then buy a small set screw hose clamp from your local hardware store. Tighten it real tight and walla. Same thing happen to me and that was the fix. Don’t go out and buy another cheap plastic t fitting


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Ya that's just setting yourself up for another failure down the road a bit, once the plastic is deteriorated enough to just break off on it's own then it's time to replace the whole shebang and it would be just someones luck to be not really paying attention and have the engine overheat and cause other much more severe problems. bad advice.
i mean if you are in a pinch you gotta do what ya gotta do but that's a short term fix
 

Doubeleive

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So why not use the dorman replacement T?

Hmmmm....I replaced my oem about 4yrs ago with dorman. So far no issues....

Just wondering.
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.
 

denalianyone

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if you wanted to delete the rear heat for some reason yuo could use the striaght

Ya that's just setting yourself up for another failure down the road a bit, once the plastic is deteriorated enough to just break off on it's own then it's time to replace the whole shebang and it would be just someones luck to be not really paying attention and have the engine overheat and cause other much more severe problems. bad advice.
i mean if you are in a pinch you gotta do what ya gotta do but that's a short term fix
What does the plastic breaking off have to do with using the existing hose minus the crappy compression clamp from GM? Remove the broke plastic from the hose. I had no issues for a couple years now since using the hose with a screw clamp. The other parts of t-fitting is fine.


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Doubeleive

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What does the plastic breaking off have to do with using the existing hose minus the crappy compression clamp from GM? Remove the broke plastic from the hose. I had no issues for a couple years now since using the hose with a screw clamp. The other parts of t-fitting is fine.


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if yours has lasted a couple more years great, it's just a matter of time, those "T"s can break off anywhere at anytime once the plastic has become brittle and the T on the rubber hose splitting from off the water pump to the reservoir breaks also. I learned my lesson already. when you have been driving these for 20+ years you see some patterns those "T"'s haven't changed design. in time the reservoir will crack, the radiator will crack, the water pump will leak. the upper and lower radiator hoses seem to last though. The hoses, T's, reservoir, radiator are maintenance items, the water pump is also but generally it doesn't just blow out all the coolant and leave you stranded somewhere usually they develop a leak or a slow dribble giving you time to get it replaced.
 

91RS

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You can replace them with aluminum Ts for $70, 12" of 3/4" hose, 12" of 1/2" hose and 10 hose clamps and it'll never be a problem again.


img_1947-jpg.248941




https://www.tahoeyukonforum.com/threads/growing-up-doesnt-have-to-suck.93510/page-68#post-1451010


https://www.tahoeyukonforum.com/threads/growing-up-doesnt-have-to-suck.93510/page-68#post-1451011

Good grief look at all those hose clamps to possibly leak. That does not look like a good solution to just getting new OEM ones that’ll likely last another 10+ years.
 

89Suburban

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Good grief look at all those hose clamps to possibly leak. That does not look like a good solution to just getting new OEM ones that’ll likely last another 10+ years.

They wont leak. That's a bullet proof setup compared to that plastic shit.


Great thread and info here by the way guys good job.
 

denalianyone

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The hose(s) that sit above the splash pan have a tendency to start leaking as well. I used the same method for the heater hose w/ screw clamps as oppose to buying a new hose with the crappy clamps gm sell. But to each’s own, my 08 Lade only has 106k miles and I don’t plan on having it pass 160k.


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denalianyone

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if yours has lasted a couple more years great, it's just a matter of time, those "T"s can break off anywhere at anytime once the plastic has become brittle and the T on the rubber hose splitting from off the water pump to the reservoir breaks also. I learned my lesson already. when you have been driving these for 20+ years you see some patterns those "T"'s haven't changed design. in time the reservoir will crack, the radiator will crack, the water pump will leak. the upper and lower radiator hoses seem to last though. The hoses, T's, reservoir, radiator are maintenance items, the water pump is also but generally it doesn't just blow out all the coolant and leave you stranded somewhere usually they develop a leak or a slow dribble giving you time to get it replaced.
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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