Where is the computer located on a Chevy van?

Chevy vans, unlike cars with integrated computer systems, don't have a single, centrally located "computer." The electronic control modules (ECMs), which are essentially the "computers," are distributed throughout the vehicle. They control different aspects of the van's operation. You'll find them in various locations, often under the hood, near the dashboard, or even under the seats. There's no single place to point to and say "that's the computer."