alright. so a couple weeks ago, i replaced the heater core on my '96 gt. the heat works awesome now... but now i have another problem. i decided to try the AC, that used to work before the replacement of the heater core, but all it does is spit out heat. no AC whatsoever. even with the knob all the way on cold, it spits out the same amount of hot air as on the hottest setting. so does anyone know what the problem could be, or should i just go to the dealership? thanks.