* Under the hood in the fuse box: This is the more likely location. The fuse box is usually located near the battery. The relay itself will either be clearly labeled or you'll need to consult your owner's manual or a wiring diagram to identify it. Look for a relay that's associated with the fuel pump or fuel injection.
* Inside the car's fuse box (under the dash): Less common, but possible. Again, your owner's manual is crucial for locating it.
To find it definitively:
1. Consult your owner's manual: This is the best resource. It will have a diagram of your fuse box(es) showing the location of all relays and fuses.
2. Use a wiring diagram: A wiring diagram specific to your 2000 Cavalier (including engine size) will clearly show the location and circuit of the fuel pump relay. You can find these diagrams online through repair manuals (like Chilton or Haynes) or automotive parts websites.
3. Look for a diagram on the fuse box cover: Sometimes, the fuse box cover itself has a diagram showing the locations of the fuses and relays.
Without your specific engine size and trim level, I cannot give you a more precise location. Always use caution when working with electrical components in your vehicle.
