* Online Automotive Repair Manuals: Sites like AllDataDIY, ChiltonDIY, and Mitchell 1 offer subscription-based access to comprehensive repair manuals, including detailed wiring diagrams. These are generally considered the most accurate and reliable sources. They're worth the cost if you plan to do a lot of your own repairs.
* Haynes Repair Manuals: Haynes publishes repair manuals for many vehicles, often including wiring diagrams. These are less expensive than the online subscription services but may have less detail. Check their website or a parts store to see if they have one for your specific year and model (including engine size and options).
* Your Local Auto Parts Store: Stores like AutoZone, Advance Auto Parts, and NAPA often have access to wiring diagrams either through their computer systems or through printed manuals. They might charge a small fee or require you to purchase a part to get the diagram.
* Online Forums: Searching online forums dedicated to Chevy Express vans (like on sites like the Chevrolet Express Van forum) may turn up wiring diagrams shared by other owners. However, the accuracy and completeness of these diagrams can vary, so use caution.
Important Considerations When Searching:
* Specify your van's details: The wiring diagram will vary slightly depending on the engine size (e.g., 4.3L, 4.8L, 5.7L, 6.0L), transmission type, and any optional equipment (like towing packages). Be as specific as possible when searching. Your VIN number is the most precise way to identify your van's specifications.
* Beware of free online sources: Many free websites offer wiring diagrams, but their accuracy is often questionable. It's best to rely on reputable sources like those mentioned above, especially if you're working with electrical systems.
Remember that working with car electrical systems can be dangerous. If you're not comfortable working with electricity, it's best to take your van to a qualified mechanic.
