Originally Posted by 05wkguy
TCM issues are well known and there are two "fixes". One is just replacing the shifter bezel as it houses all the electronics for the selector. Cost seems to be around 6-700 dollars. The other option is to disassemble the bezel and clean the electrical contacts inside. A quick search should find the info for you,on how to do that. Either should fix the P0700 code.
A P0700 code is just a generic DTC signalling the TCM has a code stored - it in itself doesn't say where the fault is (other than the transmission/PCM). I don't think with the actuator voltage code that was pulled it is going to be a shifter bezel problem. The actuator circuit is shorted, or there is a problem with the PCM.
You are either going to have to be handy with a digital volt meter and reading wiring diagrams and troubleshooting flow charts, or take it to a shop to get this one solved, IMO.