yup.. nail on the head there... after running out and getting lunch (at 5:30pm), and warming up the engine and cooling system, I tried again, same result... blew chilled air and felt no water flowing (when feeling for vibrations) and also felt no water pressure (squeezing the hose).... however, when I lift the valve under the HCV (yup, I gotta do it manually, so sounds like vacuum line), I feel slight vibrations and can only assume that's water finally moving thru the system. Sadly, I can't hold that valve up long enough to warm my cab and confirm... so perhaps rerouting the vaccuum hose will prevent that task (holding the valve open) for me. Thanks again Cre...
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