|I live in Greenville as well, and guess what, the same thing is happening to me on my '92 Corrado. This is extremely odd. My ebrake used to freeze when I lived up north, therefore, I am attributing it to my rear calipers needing to be replaced. Now that your mentioning the check valve, I am going to look into it. If this is the problem, I will be extremely happy. i will let you know, as soon as I take a look. BTW, my car just felt like it froze after I had the car parked for a week with the ebrake on.