Good luck. I just got my Tahoe back after one full month parked at the dealership waiting for the parts to fix the issue. Who needs A/C in July? They replaced the lines from the front compressor to the rear A/C unit. Dealership told me this is a common problem with the 2015 models and they couldn't get the repair kit because of the demand for repairs. Wake up GM and produce more repair kits to fix your issue. Any one else out there that has a 2015 and it hasn't happened yet, hope you are under warranty when it does. It's not a matter of if it is going to happen, it is a matter of when it is going to happen. Most likely the day after your warranty expires. Time for a recall? Oh, by the way, this Question is for GM. Why did you reduce your warranty Back to the 3/36,000? Losing too much with warranty repairs?