So my truck went in to limp mode and so I replaced the governor pressure solenoid transducer solenoid and the tcc and there was a connected on top of the trans I also replaced and I thought all that will fix it but it made it worse still in limp mode and I only have reverse and I went to start the truck and I got no bus and ccd no gauges work and almost all of my dash lights are on I checked all of the grounds and connectors and they all seem fine I have no idea what it is and it’s 2001 dodge 2500 cummins 47re and it has ATS trans oh and it won’t let me read any codes

 

Disconnect the plug on the side of the transmission and see if the dash comes back. If so there's a short in the wiring inside the transmission. You should still be able to drive shifting manually 1-2-3. No overdrive or TCC lockup though.

 

It helps to use these too...
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ok I will try that

 

ok I unplug that. but still the same. will it be the pcm?
also I do have an ATS trans controller I tried to bypass it but I don’t know if that will have anything to do with it