I'm confused - Suburban 1500 tow up to 7,500 lbs?

We have the k2500 Suburban and towed 5000 dry probably 6000# loaded 27 ft Wilderness for 10 Years. Your making a mistake buying a 1500 as it is to light duty for that. So what does that mean? Breakdowns on the road, unsafe towing when you cant make grades or need to punch it to get out of harms way. Rethink what your doing and downsize yourtrailer or buy an older 3/4 ton tow vehicle. Having fun is a choice so are problems.