I read the WIKI article and it said this mod is not recommended for "northern climates" I live in Nebraska and we sometimes get some really cold winters. Will removing the AIH hurt my truck in the winter?
No. I'm in PA and have had no problems with it out for over three years now. There is a set of parameters that need to be met before the heater is even turned on. I forget what they are now, but I don't thing my truck would ever meet them to activate the heater.