Ok, so I had a 2018 eco diesel and drove it 100,000 miles without a single problem! Now the 2022 Covid special, delivery Dec 2021 has this crazy tail light failure. I ordered the LED bulbs but the halogen filaments are intact. Brake light integral filaments work. Noticed the license plate light is working, I then tested the trailer flat plug and the tail light prong is live. So without further chase I am going to crawl under the back and tap into the trailer plug wire. Truck has just over 37,000 miles on it - so just out of warranty! I love this truck for the 34 miles per gallon 3500 mile road trip I took over the summer driving with the cruise control and 5 over the speed limits. Now through wisdom of our dictator the eco diesel is gone. May have to switch over to the rumored KIA diesel truck for the next one.