the way i understand it is there is a baffle or gate that controls the air to the rear seats. Mine (2001 D, 4.7L, 2WD) is currently only getting hot air no matter what the temperature selector is set on.
Do you have any suggestions on how to fix this? For those of you that own the FSM does it cover the rear a/c & heating enought that it would be worth the purchase, I really dont have the extra coin to spend on it right now if it isnt usefull.
Thanks
TxMoose