Some of the Raptor folks just use tie downs on the bed bolts to tie down tires. Much simpler esp. if the holes in the bed are already there. Ford Raptor Gen 2/3 Arched Tire Mount Bracket - JDS Customs This one holds a Pro Eagle, as well. Of course, aftermarket support for the Hummer remains an open question.
The bed does have the bolt holes for the vertical rack, and I have welders and a cutting torch, so could make my own.
Sounds like you may just need some d-rings and the Y-strap then. I'm still thinking Rig'd or another hitch mounted tire holder might be the ticket, but for the camera and backup sensor issues.
Actually I was thinking of that later after my post. I am not sure why the Raptor one has the metal bar. I think four d-rings an two straps could tie it down in an X pattern. In fact run one strap through the center of the wheel (over on one side, under on the other side) that should keep it form moving around.
Due to the spacing of the existing bed bolts. Also, this should give you an idea of how much space this takes up (Raptor bed being, of course, 6" longer than Hummer).
i found this on the GMC accessories pages... horizontal mounting kit. plus you need another part called Bedslide 1000
oh interesting, I hadn't seen that on the accessories page before, it must be new.
I looked on the Bedslide site and it did not show the existing slide part as compatible with the Hummer. It did show the Silverado though, but that would have a longer bed.
