I have an 01 Dynasty.
IMO, the factory tank sensors on most, if not all, RVs are not worth much, and are never accurate. I installed the Garnet 709 SeeLevel II 3 Tank Monitoring System and love it. It is very accurate and when dry camping this is very important. Here is a link.
https://www.rvupgradestore.com/Garnett-Technologies-Model-709-SeeLeveL-II-p/709-1003.htm
Bill