Aamco Transmissions Terrible Experience!!. Very bad experience with aamco transmissions. Some time ago, our car was giving us a problem. My dad found out what it was that broke, which had nothing to do with the transmission. He took it to aamco. They advertised that they work on other parts of the car. They said the transmission needed a total rebuild. After the “repair” the car never worked the same and ended up with the same issue as it originally had. I would never use aamco transmissions for any reason.