gas gauge not working? same for 94 rodeo?

Hi,

I got a 94 Rodeo 3.2L auto and my gas gauge does not work however the low fuel light will come on when the fuel is low. But the gauge sits all the way past the full mark? I read the thread on replacing the fuel sending unit, but they are only talking about the 98-2002 models? Is it the same problem? ANyone have issues with gas gauge in older models?

Thank