Heater core

[dcmargush]

My 99 Silverado was towed home yesterday, due to what I thought was a bad water pump (all the antifreeze was all over the road).

 

Upon inspection of the problem when I got home, I found that a heater hose was off of the core, as it was getting dark I left the work for today.

 

I found today that there is a plastic collar over the tube on the heater core, and this plastic collar has a plastic nipple that the hose attaches to, and it is broken.

 

None of the exploded drawings show these caps, they only show the raw heater core.

 

Are these plastic pieces replaceable or am I looking at a whole heater core (would be dumb on GM's part, but maybe smart cause they would be replacing a lot of heater cores).

 

Doug

[dcmargush]

Evidently I was not looking at the correct exploded drawings, these plastic collars are a "quick connect" connector, however they are not a quick disconnect if you don't have the right tools. I went to the dealer to find the part ($30) but they don't sell tools. All the autoparts stores sell AC/fuel line tools, nothing with a deep enough reach.

 

Sooo, anyone have an idea where to get the correct tool? I had to cut/break the old one off, but would like to be able to take it off correctly next time.

 

I found today that there is a plastic collar over the tube on the heater core, and this plastic collar has a plastic nipple that the hose attaches to, and it is broken.

 

None of the exploded drawings show these caps, they only show the raw heater core.

 

Doug

[Norseman]

Had the same problem you are talking about turned out that one of the plastic connectors had cracked and was leaking just a very small amount of coolant. This went on for a while until the plastic disconnect finally just gave way. I just cut the plastic off and clamped the hose straight to the heater core pipe.

[george.underwood]

I am trying to disconnect the rear heater core on a 2002 Suburban and also ran into the problem where the "standard" disconnect tools dont work (not deep enough???). I assume these are the same type of fittings as on the front. I did a search and found the following:

 

There is a company called OTC, part number 6046. And I found one reference that said it is similar to a Kent-Moore PN J-43181

 

here is a place to order the 6046 for 12 bucks

http://www.cartools.com/Merchant2/merchant...ategory_Code=MT

 

The local Advance Auto parts store didnt have a clue. And none of the online shopping auto parts stores seem to list it. This is very puzzling since i would expect a lot of DIY heater hose replacements. I will try a couple of places Monday including NAPA and a GM dealer before ordering.

 

On my 95 Silverado, i just got thru hacking out an old broken quick disconnect and rethreading the manifold. I replaced it with a standard hose nipple and old fashioned clamp - thats "quick" enough for me!!!! I wonder if it was a management or an engineering decision to use those stoooopid things. You can bet when the heater hoses go on the suburban that i will be going OLD technology!

ARE YOU LISTENING GM?

 

This is from a loyal GM owner (two trucks and a Suburban sitting in the driveway).

[Discnik]

I am trying to disconnect the rear heater core on a 2002 Suburban and also ran into the problem where the "standard" disconnect tools dont work (not deep enough???). I assume these are the same type of fittings as on the front. I did a search and found the following:

 

There is a company called OTC, part number 6046. And I found one reference that said it is similar to a Kent-Moore PN J-43181

 

here is a place to order the 6046 for 12 bucks

http://www.cartools.com/Merchant2/merchant...ategory_Code=MT

 

The local Advance Auto parts store didnt have a clue. And none of the online shopping auto parts stores seem to list it. This is very puzzling since i would expect a lot of DIY heater hose replacements. I will try a couple of places Monday including NAPA and a GM dealer before ordering.

 

On my 95 Silverado, i just got thru hacking out an old broken quick disconnect and rethreading the manifold. I replaced it with a standard hose nipple and old fashioned clamp - thats "quick" enough for me!!!! I wonder if it was a management or an engineering decision to use those stoooopid things. You can bet when the heater hoses go on the suburban that i will be going OLD technology!

ARE YOU LISTENING GM?

 

This is from a loyal GM owner (two trucks and a Suburban sitting in the driveway).

[Discnik]

Corncerning the , quick ?, disconnect fitting. I have been lucky enough to get it to release by using two small 90 degree picks. By getting the retaining tabs to depress enough to remove the hose. Concerning the potmetal fitting on the manifold, it was not one of GM's better designs. Standard procedure with us, is replace it with a threaded nipple of the correct hose size.

[Ganudorm]

What did you guys cut the plastic off with? I can't get mine off im having the same problem as the original guy..

[Norseman]

What did you guys cut the plastic off with? I can't get mine off im having the same problem as the original guy..

 

 

Hey, Jared, use a hack saw blade just take the blade off the saw and that will give you plenty of room.

 

 

This is what it looks like.

 

[ChesterKaup]

So does the heater hose disconnect from the coupling or the coupling disconnect from the heater core?

[sejo]

The heater hose removal tool is; J 43181. Just google it and you'll find vendors.

[sejo]

Evidently I was not looking at the correct exploded drawings, these plastic collars are a "quick connect" connector, however they are not a quick disconnect if you don't have the right tools. I went to the dealer to find the part ($30) but they don't sell tools. All the autoparts stores sell AC/fuel line tools, nothing with a deep enough reach.

 

Sooo, anyone have an idea where to get the correct tool? I had to cut/break the old one off, but would like to be able to take it off correctly next time.

 

I found today that there is a plastic collar over the tube on the heater core, and this plastic collar has a plastic nipple that the hose attaches to, and it is broken.

 

None of the exploded drawings show these caps, they only show the raw heater core.

 

Doug

 

 

What's the part number for the plastic collar? I need them for a 2000 GMC Sierra Regular Cab V6.