surferJo,
you most definately can, I was offered all the way up to 6/100,000 or 7/100,000 ?? at the time of my purchase. there was three tiers Silver, Gold, and Platinum I believe. Each covered different things with the Plat covering pretty much everything bumper to bumper. I did not study it too much but noticed it was a general GM extended warr sheet with the H3 in a category of its own and I beleive the 100,000mi was in the ballpark of $2,500-$2,700 or so but don't quote me on this as like I said I didnt study the sheet, I just shook my head and said no thank you
zkirby