Where is the computer located on a 2001 Chevy cavalier z24?

There isn't a single "computer" in the way you might think of a desktop computer in a 2001 Chevy Cavalier Z24. Instead, it uses a number of electronic control modules (ECMs), often called Engine Control Units (ECUs) or simply computers by mechanics. The main one, the Powertrain Control Module (PCM), is usually located somewhere under the dashboard, often near the firewall or under the carpet, but its exact location can vary slightly depending on the specific trim level and options. You'll likely need to consult a repair manual for your specific year and model to pinpoint its precise location. There are also other modules controlling things like the body, airbags and climate control, spread throughout the vehicle.