GM Fuel Pump Wiring Diagram: Troubleshooting 2026
The GM fuel pump wiring typically involves a heavy gauge (e.g., orange) for 12V constant, a dark green/white or gray wire for pump power from the relay, a black ground wire, and a purple/white for the fuel level sender. The relay is usually in the underhood fuse block, activated by the PCM. 📌 Key Takeaways…
