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  1. K

    I have a 2006 stock Duramax. Started leaking antifreeze from bottom of head on passenger side...

    I have a 2006 stock Duramax. Started leaking antifreeze from bottom of head on passenger side. No water in oil, no white smoke. I've looked all over top and can't see a leak on top, only on bottom. Had the system pressurized and it held 15psi. There hasn't been any blow back from the reservoir...