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Re: Duramax runs hot-Water Pump?
Posted to HD/Fleet Forum on 2/23/2021

I agree with Glenn and Bradley. We have replaced countless water pumps on Duramaxes for leaking, but never for missing impellers. It is most likely going to be head gaskets. Another test you can do it remove glow plugs and pressurize each cylinder and see if y... Login to read more.