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Why is coolant leaking from a heater hose going to the core tube on your 1998 Chevy 454 truck do you replace the hose or can just tighten it up?
Wiki User
∙ 18y ago
Pull the hose and make sure that the heater core connection is in good condition. It needs to be clean and pretty round. If the hose has quite a bit of deposits or is brittle around the inside, you may want to replace it. The hose needs to be quite flexible to make a good seal. If it's more than a few years old you might want to replace it anyway
Wiki User
∙ 18y ago
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