* Online Repair Manuals: Sites like Haynes.com or ChiltonDIY.com offer repair manuals, often including detailed engine diagrams, for a fee. These are usually your best bet for comprehensive diagrams. Search by year, make, and model, and *specifically the engine code* (found on a sticker under the hood).
* AutoZone/Advance Auto Parts websites: These parts retailers often have online diagrams, though they may be less detailed than a full repair manual. Again, knowing the engine code is crucial for accuracy.
* eBay or similar online marketplaces: You might find a scanned copy of a relevant section from a shop manual. Be wary of the quality, however.
* Local Auto Parts Store: A physical auto parts store might have access to diagrams through their computer systems. Bring your VIN number for the most accurate results.
Crucially: You'll need to know the engine code for your 1992 Chevy Lumina. This is usually a three- to four-letter code (like "2.5L V6 VIN code W") found on a sticker under the hood, sometimes on the driver's side inner fender well, or in the owner's manual. Providing this code to any of the above resources will drastically increase the chance of finding the correct diagram.
