[whaaaaT]

yea i dont think its the rush of cold air either. I think its got more to do with engine rpms and the coolant flow. I know when i stop at red lights my temp goes up a little right away. When i floor it in cold or go to a lower gear it drops a lot now. So im guessing this truck just doesnt do well job of controling its flow. Im sure sombodys gonna go crazy trying to defend the perfection of the hummer. But im not ranking on my own truck. Im just saying what it does. Its kinda wierd. I've never had any other trucks do this.