The turn signal flasher relay on a 1993 Chevy Cavalier is typically located
under the dashboard, on the driver's side. However, its exact location can vary slightly depending on trim level and specific options. It's often found in a fuse block or attached to the wiring harness near the fuse panel.
You might need to remove some panels under the dash to access it. A shop manual for your specific year and model Cavalier would provide the most accurate location and diagrams.