* Consult your owner's manual: This is the best resource for the precise location in your specific vehicle.
* Look for a black box with numerous connectors: The ECM is usually a fairly large, rectangular, black plastic box.
* Use a repair manual or online diagrams: These can show you a detailed diagram of your engine bay with the ECM clearly labeled.
Searching online for "2000 Chevrolet Grand Prix GTP ECM location" with images might also yield helpful visual references. Be careful when working near the engine bay; disconnect the battery's negative terminal before starting any work.