Freeze plugs, also known as core plugs, on a Chevy Cavalier are located in the engine block. They're typically found on the sides of the block, but their exact location varies slightly depending on the engine (e.g., 2.2L, 2.4L). You'll likely find several of them.
To be precise about their location, you'll need to consult a repair manual specific to your Cavalier's year and engine. A repair manual (either physical or digital) will have diagrams showing their precise position.
