Confused Newbie TT TV weights

This is what I would do, load up what you would have for a trip in the truck and hit the scales with full fuel. From that number you will know how much you have left on the axles. That's what really matters(I'm in that I follow the DOT laws camp). You will find the axle weights on the door sticker, GVW will be 80% of the total axle weights. Also want to check your weights on the tires, make sure they add up to at least the axle ratings. So now that you know how much each axle weighs, and what you can weigh, figure out how much you can carry. IE subtract the actual from the possible. This will give you how much tough weight you can add to the rear. Now check how much your hitch is rated for. Can't go over this number either. I am not sure on those trucks, but I know my 08 Dually only has a 7500 pound tag hitch, kinda pathetic. I hope I have not confused you to much.

Even if you are below all these weights, I am not to sure I would want to tow a TT with an Envoy. They are FWD, correct? I daily drive a Dually though, so what do I know. LOL