First of all, i don't know where to post this so mods, pls move this to wherever it belongs.
I brought our family gmc acadia to the local dealer for a leaky tire valve, wheel balancing & alignment service. In short, it had nothing to do with the engine bay area. Everything was done and paid for. The next day the a/c stopped working. Brought it back to the dealer today, 5 days later due to work, and was told it's low on charge. We've never experienced any problem with our a/c throughout this record breaking summer. Besides, there are always tell tale signs of a leaking system. Told the service manager all the facts he just shrugged it off with "the work we did had nothing to do with your current a/c problem". Is this a coincident or what?
Here's the fact i gathered: When a/c button is pressed, it flashes 2 times and stays off. Ambient temp sensor is working fine. The closest I googled is a 3 flash = low on charge. I know something is preventing the a/c clutch engaging.
Anyway, I am planning to tackle the problem with coming long weekend. Any hints are really really appreciated.