18-057-16 REV. A

Flash: 3.6L Powertrain Diagnostic And System Enhancements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation, a technician may find the following Diagnostic Trouble Codes (DTCs) have been set: · **P1D73 - AGS Performance - (Active Grill Shutter). · P0171 - Fuel System 1/1 Lean. · P0174 - Fuel System 2/1 Lean.** The technician may also find the following DTC stored in the Anti-lock Brake System (ABS) Module memory: NOTE: The Diagnostic Trouble Code (DTC) is caused by a calibration in the PCM that is in conflict with the ABS Module programming. The new software flash will correct this issue. · C121C-00 - Torque Request Signal Denied. **This software release also includes: · Transmission quick learn. · Engine enhancements.**