Had to have the transmission in my truck rebuilt. They at first tried to just give it a service, hoping tat would solve the problem at a minimum cost, but it needed a rebuild. After the rebuild, there was one intermittent problem that would pop up from time to time. They gave me suggestions on how to get it reset so I could continue driving home, and reassured me that I wasn't damaging my truck if it was driven when the indicator light went on. They were able to get a stored code, fixed it under warranty, and it's been great for a year since.