I purchased a 2014 Acadia Nov 2018. rear evaporator and motor were both replaced summer 2016, less than 2 years owned with low miles under warranty. Just past the two year mark of a/c replaced parts we again have the same air conditioning failure problem.
GM will not participate in second repair with less than a year out of warranty nor acknowledge the part materials fail creating the leaks. Even with the notice you posted. This is a part which should get in the 75k miles plus range before A/C repair. I also spent a lot on my Montana A/C just beyond the 3-year warranty.
The GM dealer knew what the issue was with the A/C the first time I went in for repair—faulty part. The replacement is also faulty.
I need to buy from a company more concerned with their materials testing and responsibility for the failures. The Acadia is too expensive to expect me to install a new evaporator and motor every two years. My call into GM customer service only resulted in more days with a hot car.