* Under the hood in the fuse box: This is the most common location. The fuse box is typically located near the battery. Inside the fuse box, you'll find a diagram showing the relay positions. Look for a relay labeled "fuel pump" or a similar designation. Sometimes it's simply marked with a fuel pump symbol.
* Inside the passenger compartment fuse box: Less common, but possible. This fuse box is usually located under the dashboard on the passenger side. Again, consult the diagram inside the fuse box cover.
To find it definitively:
1. Consult your owner's manual: This is the best source of information. The manual will have a diagram showing the exact location of all fuses and relays.
2. Check online resources: Websites like Haynes or Chilton offer repair manuals and diagrams specific to your year and model Blazer. These often have detailed diagrams showing relay locations.
Important Note: Before working with any electrical components, disconnect the negative terminal of your battery to prevent accidental short circuits.
