Fuel Guage Problem

[Iron6000]

I have an 03 Express van and after a sudden stop my gas guage has quit working, it reads no fuel and the gas light stays on. Is it a float problem in the tank? I've also had my guages go crazy one day with the speedo not working and temp going high. The only thing I can think is bad ground somewhere or the float is stuck, any help would be appreciated before I drop the tank, maybe save some work.

Thank you

[DFBonnett]

Based on the fact that the gauge is out and that previously the other gauges got weird previously, I'd look at grounds and also the connections at the PCM.