Agree. There’s one thread floating around where it’s a rear pressure switch that fixed his rear AC but that’s the only info I’ve ever seenSo, I'm guessing it's an expansion valve or something if all the freon is one thing. I feel like it going to be something that costs either $50 or $3000. Lol this truck is so clean and was so well looked after it's ridiculous. Just my luck. Lol. I swear the day after the first day I noticed the warm air, it was cool the next day.