I'm into week three. Haven't had anymore smoke, but I did notice the smell of mold in the truck. I brought it to the attention of the tech, who then started looking around the PCM. He found about a cup of water, he said, up and in and around the PCM. And that it looked like water had also made it into the wire housing. So, not the Ambient Temp Sensor. It's a water leak!!! Not coming from the windshield, like you'd think. The tech feels it's coming from the firewall. A, "Specialist", is coming down on Thursday to look around, and find out where the water is actually coming from. I'll keep you posted.