Like the title says this just happened 20 minutes ago. We filled the tank with fuel and drove away and within 3 miles the fuel needle was floating between a half tank and full. The message center is doing the same thing it goes to 498 miles to empty to 187 miles to empty to 367 miles to empty. I called our mechanic who answered his phone and told me the fuel level sensor is bad. I read somewhere that there is a sensor in the fuel pump and the whole pump needs to be replaced but our mechanic said its the fuel level sensor and said the part is $130 and he grand total with part and labor he is charging us $195. I just want to get your opinions before I have him replace the wrong part. Thanks guys!