Ah, here's one more reply on this:
Using
www.mygmlink.com I see that I can order
this manual for the 2006 H3:
2005 Service Information DVD-Retail
Price: $400.00 In Stock
(English, Paper, V200503DVDRETAI)
(I did a search for the 2006 H3 so I'm not sure
if that 2005 Service Information DVD
really covers the 2006 H3. Maybe not.)
$400 -- Interesting.