I own a 2006 chevy cobalt and the a/c completely locked up. It cost me $1, 800.02 to have it repaired. The vehicle is out of warranty but is only 2 years old. I called Gm to get some assistance, they said they can't assist me due to the wear and tear on the vehicle. The car has 84, 000 miles but this should have nothing to do with the a/c, as it is only used 3-4 months out of the year. I have not even had to replace the brakes on this car. I would think if it had so much wear and tear the brakes would need replaced before the a/c.