* Your Owner's Manual: The most likely place. Check the section on maintenance or under the hood diagrams.
* Repair Manual (Haynes or Chilton): These manuals are readily available online and in auto parts stores. They usually have detailed diagrams and explanations.
* Online Resources: Websites like autozone.com, advanceautoparts.com, or oreillyauto.com often have online parts diagrams. You'll need to select your specific year, engine size (2.5L, 2.8L, or 4.3L are the common ones), and sometimes even the specific trim level for accurate results. Look for sections on "parts diagrams" or "schematics."
* YouTube: Search YouTube for "1986 Chevy S-10 Blazer belt diagram" or "1986 Chevy S-10 Blazer serpentine belt routing." Many videos show the belt routing visually.
Important Note: When looking online, be absolutely sure you're selecting the correct year, engine size, and model. Even small differences can drastically change the belt routing.