I have recently purchased a 2010 Enclave CXL. While the car is in excellent condition, the overheating of the 3 rear climate control knobs is an area of concern as I have 3 small grandchildren. I have had foreign and American vehicles with rear climate controls and this is the very first time I have encountered this issue. Buick is a great brand and I love the car, this problem has me in a state of confusion and concern. Has anyone found and fixes? ??? ???