There was a time when selling transmission overhauls was a simple matter. Most shops offered one service at one price. If the customer approved it, the job was carried out. The problem with that one service was that many times it didn’t suit the needs of either the customer or the shop. If a customer wanted more than a 12-month/12,000-mile warranty he was out of luck. If the shop needed a way to make an overhaul more profitable it had a hard time finding one. So customer choices and shop profits were limited.