Tow 8k, Need Weight Dist Hitch?

[hotstang46`]

I have an 08 H2, Do I need a weight distributing hitch to tow about 8k? I'm not near my vehicle to check a manual or look at the hitch but I seem to remember gm saying it had to, or maybe just advised it .. My truck does have the factory airbags btw.

thanks guys, I have to tow right when I get home so if I need this I need to order up if needed before I get home. And I guess if I do my only other concern is I don't really see a drop for one of those distributing hitches that would work. I'm stock height but on 38.5's right now.