* Under the dash: This is the most common location. Look near the fuse box, often behind a panel. You might need to remove a panel to access it.
* In the fuse box under the hood: Less common, but possible. Check your owner's manual or a fuse box diagram (often printed inside the fuse box lid) to see if the flasher relay is integrated into the under-hood fuse box.
To find it definitively:
1. Consult your owner's manual: This is the best place to start. The manual will show you the location of the fuse box(es) and should indicate if the flasher relay is within one of them.
2. Check online resources: Search for "1999 Chevy Silverado flasher relay location" along with your specific trim level (e.g., 1500, 2500, etc.). You'll likely find images and forum posts from other owners.
3. Look at diagrams: Search for a 1999 Chevy Silverado fuse box diagram. These diagrams often label the flasher relay's location.
Remember that the flasher relay might be integrated into a larger module in some later models, and might not be a separate easily-replaceable unit. If you can't find it, a mechanic or auto parts store can help.
