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were the pcm new or used??? did you verify all powers and grounds to the pcm???
ok, were those pcm flashed to the cars vin number???
just making sure. did you flash it your self to be sure it took??? I have been always leary about used pcm. I have never had good luck with flashing them without having codes
ok, then we are back to powers and grounds. the code is about loss of memory.
one way to tell is to check the status of the monitors. they can set while running but when the key is turned off, they will re set to not complete.