Powertrain Control Module: Notes
WARNING: This page is about a different car, the 2003 Buick Regal and 2003 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
DO NOT touch the connector pins or soldered components on the circuit board to prevent possible Electrostatic Discharge (ESD) damage to the PCM.
CAUTION:
Turn the ignition OFF when installing or removing the PCM connectors and when disconnecting or reconnecting the power to the PCM (battery cable, PCM pigtail, PCM fuse, jumper cables, etc.) to prevent internal PCM damage.