In our experience, tank reading problems are rarely due to the gauge itself. Generally, they're rooted in a faulty fuel level sending unit in the tank, a faulty voltage regulator on the instrument ...

How To A repaired gas leak leads to new fuel gauge problem John Paul, AAA Northeast's Car Doctor, answers a question from a reader who is frustrated by a fuel gauge issue on an older car.

Andrew, I think we can help with this problem. It is very common for the fuel gauge to fail on the C6 Corvette due to sulfur deposits building up on the fuel level sensor.