Just picked her up from the shop.

Leaking valve cover gasket -warranty
Leaking coolant at intake manifold gasket -warranty
Leaking coolant at heater tube -warranty

Isuzu was actually alright to deal with, it was the 'local' dealer (same one AlaskaVX was referring to) that seemed to be the rusty bolt. I have to work through them to get anything done locally.

Again, as a reminder, CHECK THOSE VALVE COVERS!