To be certain, you should:
* Consult your owner's manual: This is the best resource for the exact location in your specific Cavalier model year.
* Check the fuse box diagrams: The diagrams usually show the location of components like flashers. The fuse box is usually located under the dash or in the engine compartment.
Without knowing the year of your Chevy Cavalier, it's impossible to give a more precise answer.