To find it, you'll need to:
1. Consult your owner's manual: This is the best place to start. The manual will have a diagram of the fuse block showing the location of the relays, and may specifically identify the fuel pump relay.
2. Locate the underhood fuse block: This is usually located near the battery, often under a cover.
3. Look for a relay that corresponds to the fuel pump: The relay may be labeled or you might need to trace the wiring. You might need a wiring diagram to help you. Some resources (like online forums dedicated to Chevy Ventures) might have pictures showing the relay's location.
4. Use a multimeter (optional but helpful): If you're comfortable with basic electrical work, you can use a multimeter to test the relays in the fuse box to find the one controlling the fuel pump. This requires some electrical knowledge and caution.
Important Note: If you're not comfortable working with car electrical systems, it's best to take your vehicle to a qualified mechanic. Incorrectly handling relays or fuses can cause further damage to your vehicle's electrical system.