18-055-16

Flash: Powertrain Diagnostic and System Improvements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. A small number of customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation a technician may find the following Diagnostic Trouble Codes (DTCs) set in the PCM memory: · ** P0456 - EVAP System Small Leak.** · P0301- Cylinder 1 Misfire. · P0302- Cylinder 2 Misfire. · P0303- Cylinder 3 Misfire. · P0304- Cylinder 4 Misfire. · P0305- Cylinder 5 Misfire. · P0306- Cylinder 6 Misfire · P0300- Multiple Cylinder Misfire. · P0513- Invalid SKIM Key.