Just one more reply, why not.
Yes the bolt pattern is in fact the same. Just to clear that up. But as others have stated, the hub bore is too small and will require a larger diameter, or wheel spacers but I can't remember the minimum thickness.
I do not believe a trailblazer wheel will fit and I am clueless about the H3, although they share many components. I'm sure you won't be installing a SAAB wheel so I won't go there.