18-047-16

Flash: 6.2L Powertrain Diagnostic And System Enhancements This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM) and Transmission Control Module (TCM) with new software. A small number of customers may experience a Malfunction Indicator Lamp (MIL) Illumination. Upon further investigation, the technician may find one or more of the following Diagnostic Trouble Codes (DTCs) stored in the PCM memory: **P0456 - EVAP System Small Leak. P1611 - Supercharger Bypass Valve Position Sensor 1 Circuit High. P0513 - Invalid Skim Key.** P0300 - Multiple Cylinder Misfire (manual transmission applications only). P1613 - Turbocharger/Supercharger Boost Pressure Sensor/Mass Air Flow Sensor Correlation. P2227 - Barometric Pressure Circuit Performance. P1217 - Active Exhaust Valve 1 Performance. P121B - Active Exhaust Valve 2 Performance. **The P0513 code is set during remote starting the vehicle and nearly simultaneously pressing the Key Fob button against the Keyless Ignition Node (KIN) causing an engine stall.** **In addition the PCM software also enables freeze frame/failure records to be stored for the following Diagnostic Trouble Codes: P0102 - MAF sensor circuit shorted to ground. P0103 - MAF Sensor Circuit shorted High. P0607 - ECU Internal Performance. P060E - Level 2 TPS sensor coherency check has failed. P1610 - Supercharger Bypass Valve Position Sensor 1 Circuit Low. P1611 - Supercharger Bypass Valve Position Sensor 1 Circuit High. P1616 - Supercharger Bypass Valve Position Sensor 2 Circuit Low. P1617 - Supercharger Bypass Valve Position Sensor 2 Circuit High. P1620 - Supercharger Bypass Valve Control Open Circuit. P1627 - Supercharger Bypass Valve Position Sensor 1/2 Correlation. P162A - Supercharger Bypass Valve Actuator Control System - Max PWM Exceeded. P162C - Supercharger Bypass Valve Control Circuit.** In addition, customers may also comment on the following: