Originally Posted by DisasterFormula
Might be overfull?
I second that it might be overfull. This happened to me last fall, I kept putting more freon in but it only got worse. I think mine also had moisture in the system that was freezing up the orifice tube. After the shop evacuated the system and properly charged, it works now. Although I've noticed that the AC system still isn't as cold as my 08 Sierra but it does okay.