I have had a problem with the car this year and I couldn't decide if it was a electrical problem or a mechanical problem. I drained the trans fluid just for giggles and there it was ...........finely ground aluminum. I filled the tranny and the performance is back but it still shudders when I start out. I am going to drive it some and drain the fluid again and see what it looks like. I have one on the shelf and will change it if I have to.