I do have a sun shade to help keep the temps down. I even have a dash cover that also covers the programmer. When I am driving I fold the corner up so I can see the programmer but when I park it somewhere, I bring it down to cover it up so others can't see it but it also keeps the sun from hitting it. I've heard of the temps messing with the crystals and causing them to fade but would that cause the other stuff to happen after the truck has been running with the a/c for a while?
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