Alright finally got my cluster and data lines working on my 2004 Blazer, but now my fuel gauge will bounce around, usually only after it drops below 3/4 of a tank. Eventually it will drop to E and low fuel until I clear that code, P0463. I also have a code for EVAP P0449. I am planning on going on a road trip soon and would like to have my fuel gauge fully functional, because after I switch to drive and start going the gauge stops wherever it was at while it was bouncing around. I het around 8-10mpg city, which I need to replace my o2 sensor and see if that fixes the problem but I shouldn'
Be getting 120 miles out of one tank, should i?

full code list: (ABS is the ground and unplugged sensor)