After being told by another shop that we needed a transmission rebuild, I brought my car to Allen for a second opinion. He identified no codes relating to transmission issues, but flushed the system completely and the truck has been driving perfectly. There were also some lights on for the engine and ABS system, which were quickly and easily solved with a new gas cap! Allen is an experienced, trustworthy mechanic who will get to the bottom of repair issues without trying to oversell or overcharge for services. I've already recommended him to a friend!