Seems like that area has a bracket for supporting the recirculated crankcase gas (PCV) tube. I'll need to have a closer look at what's under my hood in that area. Do you have a catch can instead of the stock metal tube here?
Use a pair of vice grips to tighten (yes tighten) that stud a little (you'll feel it move when the threads "wake up") before trying to loosen it. If the stuck stud were mine, I'd use a dremel to grind a couple flat spots on opposite sides of that bolt.
If you get things back together this eve, don't forget to use the proper G12++ or G13 coolant...too many things go wrong down the road if you don't.
Good Luck
Use a pair of vice grips to tighten (yes tighten) that stud a little (you'll feel it move when the threads "wake up") before trying to loosen it. If the stuck stud were mine, I'd use a dremel to grind a couple flat spots on opposite sides of that bolt.
If you get things back together this eve, don't forget to use the proper G12++ or G13 coolant...too many things go wrong down the road if you don't.
Good Luck