My guess is that you didn't fully discharge the system (there are capacitors in the ECM that can hold a charge) the first time you disconnected the battery. If you have to do it again, press on the brake pedal for a few seconds after disconnecting the battery cable.
Edit: The root cause was probably a glitch in one of the control modules. Killing power reset the module.
Last edited by SouthArk370Z; 12-15-2014 at 03:21 PM.
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