Ok so a week or so ago I noticed when I started my truck the blue info center was flashing. Truck ran fine so I don’t pay it no mind and after it drives for a min or 2 it hardly did it but then I started noticing the headlights and taillights found it when I get off work at night. Also the other day I had the hood up and my fuel pressure gauge which isn’t electrical was bouncing around 5 psi back and forth so that means the fuel pump is surging. So I have a whole system surge that started out of no where.

what could it be I’ll try and add a clip right now bc I haven’t started it today so it should do it pretty good. Any input would be nice. It’s an 05 Silverado ext cab with motor swap