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coolant pressure
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  1. Duramax Sixth Generation: 2017-2019 (L5P)
    I have a 2018 GMC 3500, recently started eating antifreeze. Was told by two shops the head gasket was blown. 205000 miles. Pressure in top hose was intense along with bubbling and pouring out of overfill tank. Just replaced head gaskets, Heads were checked and milled, thermostats were replaced...
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