Hi,
I have a 2001 Suburban 2500. The AC has been working great, then stopped being cool at all. After checking it out the high pressure switch had been broken off by the previous owner and glued back on and had finally just fallen off. So I replaced it today. Got everything back together and went to replace lost R134A but the system is not holding the refrigerant in at all. Obviously it is leaking from somewhere, but as the system had no leaks before could this have something to do with the high pressure switch exchange? Any thoughts or things to check or reset on this system to get it holding refrigerant?

Thanks!!
Zoe