Question about 2000 Chevrolet Silverado 1500

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Fixing a heater core

Where the hoses connect to the heater core the nipple has broken off , what can be done ?

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You can remove the core and solder it yourself or you can have a radiator shop do it unless the rest of the core is not damaged this is an easy fix and the cost will be minimal. please rate this thanks

Posted on Sep 28, 2008


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First you have to determine if this is the hose or the connection to the heater core itself. This can be difficult to do. You should get a pressure testing machine for automotive cooling systems and use it. When you pressurize the system you can see where the leak is exactly. If it is hoses that are bad you can replace them. If it is the pipe that connects to the core (the nipple) then you need the whole core. When you replace the items that are bad you need to use permatex on the connection to be sure it wont leak again.

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It depends on your "back yard mechanic" skills.
It's not the usual repair.Most people would put in a new heater core with new nipples already there.

If you take the old heater core out and get a piece of tubing the correct diameter, then solder it on. I would reinforce the solder joint with JB weld

Oct 31, 2010 | Chevrolet 1500 Cars & Trucks

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You can TRY eponxy .(Have to let it settle and get hard for a day or so.) This is a low pressure area10 - 15 psi. it may work NO guarantees. I've done it once that was on a 2000. . This car is still on the road. I have not touched the heater hoses since. Good luck

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On a very limited budget right now, I need a new heater core, leaking into passenger compartment. Used to having no heat so was told I could just bypass the heater core for now, any suggestions on how to...

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Male fitting on heater core inlet broke off in hose

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The nipple on the heater core that connact the

Unfortunately the heater core must be replaced because the nipple is soldered to the heater core and access to the core for resoldering is not possible unless the heater core is remove and so if you go to that kind of trouble you should just replace the core with a new one rather than doing the repair and risking a future leak after reinstalling.

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