Guys, 02 slt 5.9l. Same code(p1491), fuse not blown, fcm changed, controls chanded, fluids pressure correct, condensor fan works, only thing I havent changed is the compressor or pressure switch. But, heated mirrors, AC, heat,and adjuster all dont work. This is sumthing much bigger than me right now, can someone help me with this? Cause all of this failing cant come from a pressure switch nor a compressor. Heated mirrors have nothing to do with those things. Help!