928dennis
Member
Just went through the service on the ZF trans and followed the steps that are outlined on the internet everywhere. so I start the truck go through running the gears back and forth from drive to reverse. Then rechecked the fluid level and brought it up to full. now I am getting a Service Trans message and the truck won't go into Park, The light is flushing on the rotary shifter but no codes are being thrown. All the other gears work perfect, it drives perfect, the trans temp is between 160 and 170, you have to unplug the battery the get the power to completly turn off. I used a URO aluminum pan and filter, #CY1214647PRM could not find a Dorman in the frame I needed on. I can go under the truck and push the lever on the tarns into park and the message will go away until the first time I shift it out of park. I have found a ton of things on the internet but not just like this, there seems to be codes on most of the time. Could the rotary shifter module gone bad? Has anyone had one do this? I only found one problem very close to mine that pop up on a hellcat and it needed a reflash of the TCM.