When I turned the AC on yesterday driving home it blew hot air for about 35 minutes; then it cooled down enough to stop me from sweating but it wasn't 'cold' air. I checked the codes and I don't have any, although I did have the right actuator code a while ago; but not yesterday or this morning.
I had a similar issue in my Explorer and I ended up adding a bottle of freon and all is 'cool'.
Is there anything special I need to do prior? (ie. drain the whole system)
Where is the low pressure connection connection on the C5?
Is there anything special I need to look out for?