I got in my car a few days ago, and I had no hvac fan at all. Doesn't work on low, doesn't work on high. Checked all the fuses, they're all good. It's was making a squeaking noise for a while. So I'm guessing the motors gone bad? Is that right? I just wanted to make sure before I spent the money on it. Should he easy to change, it's only a few screws right? It's a 00 gp gt.