My car was having shifting problems. One shop said it needed a transmission rebuild. Aamco checked it out and decided a speed sensor was causing the problem. They replaced it and -voila! - problem solved! They saved me almost $2000! And to think I could have had the transmission rebuilt and still had the same problem if I hadn't gone to Aamco. The Aamco guys were really knowledgable and nice, too. I could tell I was dealing with a team of skilled professionals. From now on, they are my first call.