Hello, I’m not a car person in the least. So my 2008 Malibu, with 95,000 miles, the fuel gauge works then shows empty, then back to full again. This morning as I was parking, gauge was showing empty again, and now my check engine light is on, is this because the fuel gauge is going crazy? So I’m asking, what needs replacing? Is the fuel gauge part of the fuel pump or separate? I know they need to drop the fuel tank, so at that time, I would just want them to fix everything, since the tank is down, is this right? Any suggestions would be greatly appreciated! Thank you all!