To find it, you'll likely need to:
1. Consult your owner's manual: This is the best place to start. The manual will have a diagram showing the location of fuses and relays.
2. Look in the fuse box: Many S10s have a fuse box under the dash, often accessible by removing a panel. The flasher relay might be in there, often with other relays.
3. Search online forums: Searching online forums specific to the 2002 Chevy S10 will likely yield images and detailed descriptions of its location from other owners. Be sure to specify your trim level (e.g., 2WD, 4WD, extended cab, etc.) for the most accurate results.
Keep in mind that some models might have the flasher integrated into a larger module, making it less easily identifiable as a separate component. If you can't find it visually, it's always best to refer to your owner's manual or consult a qualified mechanic.