[H3slate]

This website has your parts. They don't list #'s but they did have prices.
http://www.gmparts-direct.com/

inner cv joint $186.47
outer cv joint $193.79

You can find these parts under the front axle assembly section for the H3.

I also found the parts here

http://www.alldiscountparts.com/partlocator/index.cfm?action=getJointLocator&siteid=214079&cha pter=&sectionids=20,0&groupid=10016&subgroupid=200 15&make=1000&model=Hummer%20H3&year=2006&catalogid =1&displayCatalogid=0

but again, no part #'s.

Hope this helps.

One more site for good measure

https://www.hummer-parts.com/oe_parts_catalog.html