* Repair Manuals: A factory service manual (FSM) or a Haynes/Chilton repair manual for a 1996 Chevy Caprice is your best source. These manuals often include detailed diagrams and exploded views of the engine components. You can find these online through retailers like Amazon or eBay, or sometimes at auto parts stores.
* Online Parts Catalogs: Websites of major auto parts retailers (like AutoZone, Advance Auto Parts, or NAPA) often have online parts catalogs. While not schematics in the strictest sense, they often have diagrams showing the engine's components and their relationships to each other, allowing you to identify parts. You'll need to know the specific engine code (found on a sticker under the hood) for best results.
* Specialty Websites: Some websites specializing in automotive repair information may have some diagrams, but the quality and completeness can vary.
* Dealership (unlikely): A Chevrolet dealership *might* have access to schematics, but getting them from them might be difficult and potentially costly.
Important Note: The type of engine in your 1996 Caprice will greatly influence the availability of schematics. The Caprice came with various V6 and V8 options. Knowing your specific engine (e.g., 3.8L V6, 5.7L V8) will significantly improve your search results. This information should be on a sticker under the hood or in your owner's manual.