Ok, thanks for the reply . Now I understand the entire instrument cluster is considered one unit. Please keep us informed with how this turns out. I have talked to several Seneca owners and they all seem to have inaccurate fuel gages. We all assumed it was the sending unit in the tank but as you are finding out it my be the instrument cluster that contains the fuel gage .
Apple Valley MN
2015 Seneca TS
Previous RVs: 3 truck campers and 2 fifth wheels
Love the Seneca. Toad 2018 Ford F150