I know a little about automatic transmissions, but not enough to repair one on my own. When mine started acting up, I was pretty sure that it was not a major problem. However, three other shops told me it was going to coast over $1000 to repair. When I talked to one of Clary's people, he agreed it should be a simple fix. He found that the throttle position sensor spring had come loose. He fixed it in less than 5 minutes, then refused to take any money for the repair! I'll never go anywhere else for a drive train repair.