* Your Owner's Manual: The most straightforward place to start. Check the section on engine maintenance or troubleshooting. It may not be a detailed diagram, but it might show the basic firing order.
* Online Repair Manuals: Sites like Chilton or Haynes offer repair manuals that can be purchased either digitally or in print. These manuals typically have very detailed wiring diagrams. Search for "1998 Chevrolet Tahoe repair manual" on their websites or other online retailers.
* Factory Service Manual: These are the most comprehensive manuals, used by dealerships. They're generally more expensive than Chilton or Haynes, but they offer the most detail. You can sometimes find them online through used parts websites or forums dedicated to Chevy Tahoes.
* Online Forums: Search on forums dedicated to Chevrolet Tahoes (like tahoelife.com or similar forums). Someone might have already posted a diagram, or someone might be able to help you find one. Be sure to specify the engine size (e.g., 5.7L, 4.3L) as this will affect the wiring.
* Automotive Parts Stores: Some larger auto parts stores (like AutoZone or Advance Auto Parts) may have access to diagrams through their computer systems if you provide your vehicle's information.
Important Note: When working with spark plug wires, be absolutely certain to reconnect them correctly. Miswiring can cause engine misfires, damage to the engine's components, or even prevent the engine from starting. If you're uncomfortable working on your vehicle's electrical system, it's always best to consult a qualified mechanic.
