If you don't have the owner's manual, you can try these options:
* Chevrolet's website: Check the Chevrolet website's support section. They may offer online owner's manuals or downloadable diagrams. You'll likely need your vehicle's VIN (Vehicle Identification Number) for precise results.
* Online automotive repair manuals: Sites like Haynes or Chilton often sell downloadable or online repair manuals that include detailed diagrams of fuse boxes and other components.
* Third-party automotive websites: Some websites specializing in automotive repair information might have diagrams available; however, always verify the site's reliability before using the information.
* Your local auto parts store: Auto parts stores like AutoZone, Advance Auto Parts, or NAPA may have access to wiring diagrams or printed manuals you can consult in-store or potentially access online through their websites. They might even be able to print a relevant diagram for a small fee.
Remember that there may be more than one fuse block in your Trailblazer (one under the hood and potentially one inside the cabin). The diagram in your owner's manual or from a reliable source should clarify this. Always be careful when working with electrical components and disconnect the battery's negative terminal before working on the fuse box.