fuel gauge reads empty all the time?

[kauaiman]

I know this has been gone over a lot, but i can't seem to figure it out after reading previous posts. Fuel gauge stays at empty with known fuel in tank. If i pull tan fuel sender at fuse panel, gauge goes to 2-3 o'clock like its suppose to. if i ground the fuse panel ,gauge goes to empty. take sender out of truck, using ohm meter it tests up to 90 ohms at full. seems fine? what am i missing?
using the tried and true fuel stick method down the tank for now.
Thanks for any input.