There coul;d be problem w/ the gauge - in this case you'd have to replace whole instrument cluster. However, more common problem is w/ the Fuel level Sending Unit, which is located inside the gas tank. The good thing is that you don't have to remove fuel tank to replace it because access to it is from the trank (right hand side, near the rear seat). The bad thing is it is ~$150.00 and I was charged ~$40.00 for labor. Main was displaying 12 gallons and was not moving at all so I ran out of gas.