They are part of the conductor plate if I remember correctly. If they are the issue then a new conductor plate will need to be installed. I have a new in box plate. I will check it tomorrow to make sure that they are already attached. I have changed out 2 of them. I am sure other members have also. There was a thread in here a week or two ago about that. If you check the search functio you will probably find a thread or three in here about conductor plates and how to replace them. In that PDF it shows the plate and explains where the sensors are as opposed to the other shift solenoids. while you are there check the o rings and make sure the screen type filters are clear of debris. It also explains how they are supposed to work. If the TCM is faulty you will find it under the passenger side floor. I believe it is attached to, and under a metal plate. If you find water / oil damage there, then that could also be the problem. Before replacing the plate I would check the TCM for water / oil damage and the wiring from that to the trans adapter for corrosion or damaged wires. But if it is leaking where the wires go into the trans then that needs to be fixed. I purchased the service kit from fcpeuro. Its pricey but comes with everything. You can find it cheaper elsewhere. Here is the link to fcp for a visual reference of the parts involved.
https://www.fcpeuro.com/products/mer...on-service-kit