Agreed, it would be on them. I suspect that's why some guys don't want to risk it. I've never used alphaobd, so I can't speak to how easy that is to set up. But having a switch that gives you different heat levels from the factory would eliminate that risk. There's nothing wrong with having a wish list.Not criticizing them. I'm saying it's something that can be done
As far as warranty. Changing that one setting will not cause any issues. If they mess up the truck doing other things, that's on them