Fuel Gauge

[ColoSVXer]

Greetings,

My fuel gauge in my 96 LSi is very erratic. Once I fill it up, it does read correctly, but after a few miles and starting and stopping, it goes below E or somewhere in between. The yellow warning light does not come on when it goes below E and I'm using the odometer as my indicator. I'm guessing
it might be the sending unit. I've never changed the fuel pump or float. Runs great. Maybe it's an electrical issue. Any ideas?
Also, looking for a complete original antenna. I know a brand new one is around $180.
Thanx