Hello guys. I'm currently In A bind I had my transmission rebuilt and had a used valve body put in. But the car is doing the exact same thing as before. Now I've read lots of thread with mixed info. But Im hoping to get a some info from anyone whoes experience this. Is it likely that my used V.B is bad or is because its not reprogrammed. My biggest concern is IS it a MUST to reprogram the used Valve body. Is that what's holding me back. The car runs but the AT light flashes n CEL is on. I'm pretty lost because my tranny guy just wants to keep adding parts but nothing he does fixed the car. Please help. Thanks

If you had it rebuilt, then the business should complete the work and fix it! The dealership will just replace the whole unit instead of opening it up. Another option is to put in an aftermarket Valve Body that people use to strengthen the tranny.