Hose size for backflushing heater core

[HiHoeSilver]

Just my opinion... and I could be wrong... but I'm willing to bet those are NOT the original T-connectors at 206k miles.

Never know. Mine are at 155...

 

[kbuskill]

If they are then you are on borrowed time IMO.

 

[gooffeyguy]

Just my opinion... and I could be wrong... but I'm willing to bet those are NOT the original T-connectors at 206k miles.

They are. I'm the second owner. I bought it from my father in law (original owner) in 2007 with 65k miles on it. He gave me all the service records at the time.

Only things I've replaced on motor have been spark plugs, wires, drive belts and front O2 sensors at about 110k miles. Everything else is original still.

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

 

[HiHoeSilver]

 

[wjburken]

Just my opinion... and I could be wrong... but I'm willing to bet those are NOT the original T-connectors at 206k miles.

My ‘07 XL Denali had the original ones on it when I traded it in at 300K. As a matter of fact, it had the original O2 sensors.

 

[kbuskill]

They are. I'm the second owner. I bought it from my father in law (original owner) in 2007 with 65k miles on it. He gave me all the service records at the time.

Only things I've replaced on motor have been spark plugs, wires, drive belts and front O2 sensors at about 110k miles. Everything else is original still.

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

My ‘07 XL Denali had the original ones on it when I traded it in at 300K. As a matter of fact, it had the original O2 sensors.

Guess I would have lost that bet... I must say that I am surprised.

When I bought our Burb it had 154k miles on it and it has about 239k on it now.

I am not certain if the first owner ever had the plastic T-connectors replaced or not but I had one break clean off while I was pulling a trailer with 4 motorcycles in it up the side of a mountain in Sevierville, Tn.

It broke and dumped all the coolant out before I knew what happened. I was on a winding 2 lane road with no where to pull over for about a 1/4 mile. Thank God there was an old abandoned gas station that I was able to get into.

I pulled over and popped the hood and discovered what had happened. I ended up bypassing the heater cores and was able to get enough water out of my cooler to refill the cooling system... it's a big cooler... lol

So that was one time that I replaced them.

The second time I replaced them was when one of them developed a crack that was just big enough to spray a tiny little stream out and cause the windshield above the heater core to fog up because it was winter time.

The third time I replaced them I went with the Gruven billet aluminum T-connectors and I should never have to worry about, or fool with, them again.

Not sure why some people never have issues and others, like myself, end up replacing them several times.

 

[08grey]

People like me lean on them and dont realize when they are changing the spark plugs. They breal shortly later.

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