Question about GVWR.

Your Silverado has a particular rating due to the components selected during build and the class of vehicle under which it was marketed. If you change any of those components, it is possible to decrease to increase the rating because your sticker no longer reflects the current configuration. It is also possible that your truck has derated sticker to stay within parameters that have nothing to do with safety. It's up to you, as the owner, to investigate how or why your GVWR is set if you plan modify from OEM. Just because because you deviate, does not mean you are not safe if you know the effects of your changes.