I've tried to search the same thing online with no luck. There is a Hummer VIN decoder, but it's pretty general.
http://www.hummerknowledgebase.com/general/index2.html
It would be nice to have something like GM did with Pontiac called PHS (Pontiac Historical Services) where they will give you all the info on your VIN and the numer of cars built that year with each option. There's tons of Corvette build information online but very little H2.