My truck went in yesterday at 7:30 a.m. for the TSB repair. The dealership called at about 2:45 p.m. today to tell me it was done. I picked it up a while later. So far, no rattles or obvious damage. I can't say with 100% certainty that the dash actually came out, but the paperwork says it did. If so, I can't tell it now. According to the repair paperwork, that is one invasive repair. I did find one small screw on the drivers floorboard. I'll have to try and find it's home.
We had an 80 degree sunny day on Friday. While I was out that afternoon, I stuck my thermometer in the vent to the left of the infotainment system and registered between 53 and 55 degrees. The vent on the left registered from about 42 to 44 degrees. Holding your hand in front of each of these vents, you could feel the temperature difference. On the way home from the dealership this afternoon, cloudy and about 65 degrees. I ran the A/C, and the temps out of these vents felt comparable, but who knows for sure. Got a nice day coming up Friday, so that will likely be my next test day. But, so far, so good.