This morning on my way into work my gas gauge decided to get erratic. It constantly bounces back and forth between full and empty. I got a CEL but havent had time to scan the code yet. Right now I am just trying to find out of this is a common problem like a lose or corroded wire that I can easily track down and fix or a bigger problem the involves dropping the fuel tank. Any input is appreciated. Thanks.

 

I would look at the wire that runs to the guage at the tank. An open circuit will show empty and a grounded circuit will show full. It's possible you have a broken or pinched guage wire. I'm not certain but I think the fuel pump and guage wires go through the floor pan with a grommet. The actual voltage in the guage wire is less than 1 volt and is very susceptible to bad connections. It may even be a bad ground. When tanks were steel, this was a major reason for fuel guage problems.