NHTSA Complaint #11519379 — 2017 CHEVROLET SILVERADO 1500

while driving my son saw smoke coming from the rear window defogger, I pulled over and saw melted pieces of plastic, I contacted my dealer when I saw a recall online, my dealer said even though your vehicle is the same year and model and the exact same condition occurred, your vehicle is not listed under the recall. I don't understand why this vehicle is not under the recall when the exact condition occurred. GM was unable to assist with and complete the repair under the recall