you have to open your glove box and look for the screws around the edges, the box will slide out.
you sure you didn't just strip a few of the threads off the linkage? I did this by trying to knock ice off mine without pulling over, and catching it on the upswing
or like pauly said, you could have put too much strain on the motor.
Its not too difficult to replace the assembly, I did it. Think I only paid $150 for the parts.