Lisa, I am not sure what that is all about. The GVWR is the weight of the vehicle that can not exceed the listed abount this includes the vehicle'schassis, body, engine fluids, fuel, accessories, driver, passengers and cargo. It excludes towed vehicle. The GCWR is all of the above including the towed vehicle. For a better understanding you can visit my website
RV WEIGH - Mobile Weigh Station and look up weight ratings.