When you start the car in the cold, the seat heaters (sometimes just the driver, sometimes the passenger too) automatically come on -- not a new concept, but certainly a good one. (And why it took Chevy until 2018 to figure out that the steering wheel heater should come on at the same time is ridiculous). But then the system continues to "refine" (i.e. back off) the heaters based on some secret algorithm. At least for me, I would prefer that once they turn on, they stay on until I turn them down. But the algorithm is even worse. Again, my taste, but the heater always winds up at one level below where I would like it to be. And so it takes three pushes to get it back where I want it. In that regard, it would actually be better if the seat heater didn't come on at all. Then I could just set it and forget it, rather than having to pay attention to something else as my bottom cools while driving.