Hemilife1877
Junior Member
Mine had that same high pitched squeal until we took off the plastic engine cover on the left side of the top of the motor is the purge valve try cupping your hand and putting it over the purge valve and see if it muffles the squeal . One we replaced that purge valve it stopped but I think I still have a pully Bearing slightly squeling on the water pump on and off or whose knows at this point after everything the dealer already replaced.
Sounds like your purge valve is stuck open.
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