Let the sorting begin. Here is the first months list. Change fluids, (don't forget the ZDDPlus oil additive, GM syncromesh trans fluid, rear end gasket) check rebuild hydraulics, grease window winder mechanisms, brakes, tstat and gasket, sort thru electrical gremlins, tune up, identify leaks. It's common for the fuel float to "clock" in the tank and not read correctly. It's also common for them to saturate with fuel and not float all the way to the top. This also gives a false reading. Lastly, sometimes the needle on the gauge just needs repositioning to read correctly. Good luck, have fun, and welcome aboard. If you need anything, don't hesitate to ask.