To find it definitively, you'll need to:
1. Consult your owner's manual: This is the best resource. It will show the location of the fuse box(es) and often specifically point out the flasher relay.
2. Check common fuse box locations: Look under the dashboard on the driver's side. There might be a panel you can remove to access fuses and relays. Also check under the hood for a fuse box.
3. Look for a small square or rectangular relay with multiple prongs: The flasher relay is usually easily identifiable by its size and shape. It may be labeled, or you can compare it to images online of a Chevy Cavalier flasher relay.
If you can't find it after checking these places, a search online for "1994 Chevy Cavalier flasher relay location diagrams" might yield some helpful images or forum discussions from other Cavalier owners.