The fuel pump relay location on a 2000 Pontiac Sunfire is in the underhood fuse box (also called the power distribution center). However,
it's not always clearly labeled as "Fuel Pump Relay." You'll likely need to consult your owner's manual or a wiring diagram to find the specific relay. The manual will show you the fuse box layout and identify the relay.
Without the manual or a diagram, pinpointing the exact relay will be difficult and require some trial and error (and a multimeter to confirm).
