The compressor is not engaging at all anymore. GM vaguely explained to me that "they need to install a new one" costing about $1000. If this is true that it needs a new one I would rather pick up one off ebay new for $190 which is much better than GM's quote of $600 for the compressor. Does anyone else have any suggestions or thoughts that might be able to help. I took it to a shop as well and tapped in the ECU with a GM Tech 2 and got the air conditioning working for just 1 day then it went back to not turning on at all.

The story is, about a year ago I started to unscrew part of the low pressure side and it started hissing for about 5 seconds or so and then I tightened the bolt back up and now a little less than a year later I see this problem.

 

bump. dying of heat exhaustion lol

 

Is it not turning on, or just out of refrigerant since you blew it off?

 

its not turning on at all.

 

Ok. I'm having a similar problem, but I just lost most of my refrigerant when I tried to tap the sensor for hpt. I would maybe suggest calling Tom at crate engine depot to see if he could get the p/n for cheaper for you. I honestly don't buy anything directly from gm, and never let their guys touch my car. Sorry I can't help much.

bump for you.