2000 Chevy GMC 5.3L Fuel Pump PSI Wiring Diagrams Fuse Relay Connectors
2000 Chevy GMC 5.3L Fuel Pump Circuit HPower starts at the ECM B fuse, a 20-amp in the underhood junction block that’s hot at all times. It feeds pin 30 of the fuel pump relay. The relay’s coil has two sides: one goes to ground (the black wire out terminal F7), and the other —… Read More: 2000 Chevy GMC 5.3L Fuel Pump PSI Wiring Diagrams Fuse… »