I want to get a roof rack and prefer Yakima over Thule. But Yakima only has racks that attach to the Premier roof rails, no "naked roof" option. I saw someone post that it's possible to buy roof rails, but can't find them on the Chevy accessory site. I also don't want to install them myself, so wonder if Chevy dealerships would do that, or where I'd go to get that done. Anyone get this done? Advice & links? Thanks!