Before I start I do not know my ass from a hole in the ground when it comes to trucks I am attempting to figure out why my boyfriends truck isn’t working. He had a new fuel pump, new starter, new cores to the batteries, had his ficm repaired by ficmfixer, along with a bunch of other parts. Right now the code is saying power to the ficm logic board is 5v obviously not what it’s supposed to be at. We have been wracking everyone’s brains to try and figure it out. We are thinking maybe it’s the wiring harness.