Transmission not change
 

Good evening, I wanted to tell you a case to know if any of you have happened and know how to fix it. I have a wagoneer limit 88, 4x4, injection, with an automatic transmission A340, but the transmission does not make the changes automatically, you have to do them manually and so if you grab them. We removed the lid of the crate from the box and checked the selenoids, one was bad, we exchanged it for a good one and it still does not make the changes automatically. What is that???