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Apparently valve not working, how can I check it?

Radiator nor warming up whatever setting. There is no air lock.

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Sounds as though the thermostatic radiator valve is stuck although the valve settings can be set to max. sometimes hitting the side of the valve will free the stuck spindle & get it working again.

If not a drain down of the system & a new valve fitted

Kindly

Richie

Posted on Dec 15, 2008

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I Have a 2003 Yukon denali & I dont get no heat i change the thermostat & antifreeze but no heat


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