18-009-15 REVB

Flash: MIL Illumination. Includes Various Drivability Improvements This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM) with new software. A small number of customers may experience one or more of the following symptoms and/or a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the Diagnostic Trouble Codes (DTCs) listed below: ? P0141 - O2 Sensor 1/2 Heater Performance. ? P1D73 - Active Grill Shutter (AGS) Performance. ? P113D - O2 Sensor 1/1 Slow Response (2015 only). ? Engine bump sensation felt during moderate to heavy acceleration over 3500 RPM. ? DTC P061A - Level 2 torque performance set. ? Engine difficult to restart after cold or warm soak periods. ? Intermittent high coolant temp warning lamp illumination when using cruise control. Condition occurs in conjunction with the P061A DTC listed above. ? Poor A/C performance primarily during extended hot idle and/or low speed driving conditions. Applies to vehicles built with 1234YF refrigerant sales code XFC. ? Black smoke from tail pipe on initial start up during cold ambient temperatures (2014 only). ? Cold start difficulty below -10C (14F) ambient temperatures. Engine cranks fast and possibly does not start due to loss of crankshaft synchronization until key cycle is performed. (Vehicles built on or after August 23, 2014 (MDH 0823XX) and on or before June 16, 2015 (MDH 0616XX)).