Haha - here is your complementary blown lower intake gasket! Both coolant passage gaskets are gone - and the lady kept on just adding coolant. She thought it was "normal."
Every GM V-style engine does this. My 1989 3.1 did it and this is from a 2000 3.4 Venture with only 60,xxx miles on it. Please - I urge you - if you have to add coolant/notice the coolant is getting low find out where it's leaking ASAP!! This engine WILL have to be replaced now due to the coolant mixing with the oil.
Happy driving...
