I got these codes. I wanna just focus on fuel pump code and misfire code and how to fix them. I think the fuel pump code has caused the misfire. My truck starts right up and doesn't stall and no drive issues.

 

The computer gets system voltage thru several wires, engine off volts 12.5v, engine running volts 13.5v

Computer has a monitor wire on the inertia switch wire that monitors voltage going to fuel pump from fuel pump relay
It compares these two voltages, if its off by more that 2 volts, low, it will set the P0231 code
So could be a corroded wire/connector, start at fuel pump relay, pull it out and check connections, also fuel pump fuse

That code would also be set if you pulled out the FP fuse or FP Relay and then turned on the key, because fuel pump would have 0 volts key on and it should get 12.5v for 2 seconds

Fuel pump couldn't cause P0305
It could cause P0316, random misfires, if fuel pressure was low, because fuel pressure would effect all cylinders

 

Yes I did pull the fp fuse while the truck was running to get low fuel pressure when i replaced the fuel filter so am i good? I'm left with misfire.
idc what causes bank 5 misfire. it gets spark and fresh spark plugs 1 thousand miles ago.

 

What did the old #5 spark plug look like?

Or pull the new one and have a look at the tip

Did you change all the spark plug just because it was time, or was there a reason you changed spark plugs?

What year 3.0l engine?

 

I changed spark plugs just because i i just bought it 2 months ago. They were fine but just for good measure. i have 2002 with 206k miles. spark plug was fine. It prolly threw the code when i unplugged it while the truck was running

 

Yes, that would set codes as the engine started to die with key and computer still on