wipers and windows won't work until motor is warm

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I have a 2007 g6 with 117xxx miles. I've had so many problems out of my car lately. The windshield wipers will not work and the windows won't roll down until the motor is warm, meaning If it's raining I have to start my car and wait for the motor to warm up before I can drive. In addition to that when these problems started, my AC/Heat went out, it will work maybe 2% of the time. I can't drive my car if it's cold because the windows fog up and I cant roll down the windows because the motor isn't warm. It's so frustrating and it's a death trap. How do I fix this? I've spoken to a lot of mechanics in my area and none of them seem to have the answer. I just want to have my car fixed.