Seems like there was a TSB for that fault code and some others corrected with a ECM update. I however would check your battery cable connections for corrosion. The 03 and up trucks use the drivers side battery for voltage sense for the PCM to regulate charging. The problem occurs when the charge wire from the alternator goes to the passenger side + battery terminal first. When the connection to the drivers side battery is bad, the drivers side battery will not get charged. The PCM will then turn the alternator on full-tilt and cook the passenger side batt.