1808922

Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the correct software. This vehiclemay have been programmed with incorrect software. The customer may experience Active Noise Control (ANC) system not working. Upon further investigation the technician may find the followingDTCs have been set: P1404 - EGR Position Sensor Rationality Closed. B154F-64 - Lost Crankshaft Pulse Signal-Signal Plausibility Failure B154F-24 - Lost Crankshaft Pulse Signal-Signal Stuck High. P1404 - EGR Position Sensor Rationality Closed DTC can be erroneously set when other DTCs are set.In addition, customers may experience one or more of the following concerns: In Power Take-Off (PTO) mode, transmission gear engagement is abruptand idle speed is high when transitioning From Park To Drive/Reverse Gear.