Haha cant' seem to find a good website that sells a lot of aftermarket stuff for an H2. I would have thought there would be more than I can find. I can't even seem to find a Chiltons or Hayes shop manual for the thing!

 

Hello Friend,
I also experienced this same situation some time ago.
Chilton / Haynes does not make a service manual for the Hummer.
I suggest that you try "Ebay" or "Craigslist" for any accessories including the "OEM" service manuals.
There may be other resources which I'm unaware of but most of my accessorising and custom installations have been with items obtained through these sites.

 

I have looked at Ebay but they don't have any. Maybe one day it will show up. I'm sure they are not cheap directly from GM.