not saying this is your problem but, i had a shaking and pulling thing going on with my IROC. drove me crazy. changed this and that . adjusted here and there. couldn't find the problem. the tires were good but i decided to change them anyways. broke the tires down and one of the tires had a gallon of water inside it. go figure. one way to check for this problem without breaking them down is with an old style bubble wheel balancer. sick

 

I just replaced a window motor tonight, it was a pain. I couldn't find the rivet gun for those "bearclaw" rivets so I just went ahead and stuck some bolts through it with some lock washers. Hopefully they won't come loose because I'd hate to take that motor out again. Be careful when pulling the door panel off, that cardboard is probably really soft and those plastic pieces tear out easily.