Where is the fuse for trailer lights on a 2004 Avalanche?

In a 2004 Chevrolet Avalanche, the fuse for the trailer lights is typically located in the underhood fuse box. You can find the fuse box near the battery, and the specific fuse for trailer lights is often labeled as "Trailer" or "Towing." Consult the owner’s manual for the exact location and amperage rating of the fuse to ensure you replace it correctly if needed.