I have a 2004 grand prix and I am having a small amount of coolant leak into my oil. From reading the forms it looks like I need to replace my LIM gaskets but is there anyway to tell that I need to replace those instead of my head gaskets? I just top swapped my car about 3 years ago so the gaskets are relatively new but I want to make sure I replace the right gaskets before I need to spend more money to redo things. Thanks for the help