trans codes
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Join Date: Dec 2010
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P0700 is just the TCM telling the ECM to light the CEL. You would need a better code reader to get the actual code from the transmission. U codes are communication errors between the computer modules, ECM, TCM, FCIM, Etc.
try clearing the codes and see if they come back. If they do look for loose or dirty pins at the ECM, TCM, Etc. Look for bad grounds, wires that have rubbed through. May also be your batteries or ignition switch going bad.
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