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2006 CTS sport model/package
1,058 Posts
If I'm not mistaken, the overflow hose has no pressure in it. So, instead of a new rad, maybe try some JB weld plastic or a similar plastic repair agent and see if that works. For the odd rare times that you get coolant through there, I would be doing that instead. You can go a month or ten months at a time with no coolant in there. It will save you the money for a new rad for something so minor!
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