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Hello, welcome and thanks for asking your question. My name is*****'m a Certified Auto Technician with 28+ years experience. I will do my best to assist you. please keep in mind that I may need to ask questions of you before I can answer. When you reply please feel free to add as much detailed information as possible pertaining to your concern.
I may be able to help with this but I need to know the make and model of the scanner or code reader that you are using to retrieve codes.
Keep me posted...
Hello, sorry for the delayed response...
At this time, I recommend to use a scanner that is capable of retrieving codes from the Transmission Control Module. The Innova 3020b is ONLY capable of retrieving engine related codes. The P0700 is a "generic" code that is telling you that there are codes stored in the TCM. To be able to tell what needs to be done next, you need the codes as retrieved from the TCM. If you can post the codes that are retrieved from the TCM and I will be able to tell you where to start diagnostics to get this figured out.
As for the U0002, it is referring to a communication issue with the High Speed CAN Bus. It is very possible that the codes in the TCM will help pinpoint the U0002 code...