Where is the blinker relay located on a 04 Chevy Express 250?

On a 2004 Chevy Express 2500, the blinker relay is typically located in the fuse box under the dashboard on the driver's side. You may need to remove the panel covering the fuse box to access it. The relay itself is usually a small, rectangular component that can be identified in the fuse box diagram. Always consult the owner’s manual for the exact location and identification.