I understand the basics, but want some more information for a possible tow I may be making. I have a 2004 Silverado 1500 Z71 Extended cab. the listed GVWR is 6400 lbs. curb weight around 4900 lbs. payload is listed at 1468 lbs. towing capacity is 8800 lbs. My hitch is rated at 6000 lbs, the slide in frame mounted receiver is rated at 5000 lbs. I'm looking to make a combined tow and bed cargo trip. The tow load is a small car, no engine or transmission. Curb weight is around 2100 lbs without those two items. Trailer is around 900 lbs, so combined tow is 3000 lbs. Trailer is a dual axle low boy. So if I'm careful, I should be able to get the tongue weight to less than 500 lbs. If so, from what I recall, I have to subtract that tongue weight from the payload, which reduces my bed capacity to around 1000 lbs, is that correct? So, if that's the cast, my combine vehicle weight is around 9000 lbs with a 1000 lb payload in the bed. The listed GCWR is 14000 lbs. Basically, it possible I need to haul around 1500 lbs of payload in addition to the trailer. It's a 400 mile haul, 99% highways. But if my memory of the allowable loadings is correct, I can't do that. Is that right? Just trying to avoid making two trips, but not seeing a way around it.