This girl could use some help! 2004 G/am blowers work fine, however, I have no heat, no air conditioning and no rear defoggers. Little display lights on buttons don't work either. Thought maybe it would be a simple fix, with maybe a fuse, but I can't figure out which fuse...I am guessing a fuse in the engine compartment block...With all 3 going out at once, I couldn't imagine it being several different fuses. I've managed all summer without air, but the last few cool nights have caused dense thick fog, causing my windshield to instantly fog, and I am blinded. Pretty scary situation taking my son to daycare with all the cars and trucks on the freeway at 5 am...can someone please help? 