Hello, I have a 2018 Chevy Traverse with 54,000 miles on it. In the last month, I have had to take it in 3 different times because my AC stopped blowing cool air. It started with intermittent hissing and then would blow warm air for a few seconds and come back. Then it totally stopped blowing cool air. I had the Freon recharged, and the AC heads changed ($450), then a week later the same issue. I then had the back evaporator changed ($1100), and now it is out again. My mechanic is even frustrated with my car as it has the new expensive Freon and has said multiple times that my car should not be having this many issues with the good condition it is in. I am very frustrated and I am tired of driving a hot car with two small children under the age of 6 in it when we are still in the hot season in Texas. Anyone else have these issues? If so any other fixes?