A/C Trouble

[stadair]

I don't think that it's my A/C pump that is the problem. The reason I say so is that I have been noticing that when I shut the car down, mainly in the garage, after a drive with the A/C on, I hear a hissing sound from under the hood. Today I decided to investigate further. With the hood up, I shut down the car and listened to where the hissing was coming from. It's coming from one of the two connections on the passenger side right next to the radiator.