21-016-15 REV-B

Flash: Transmission Shift And Drivability Enhancements This bulletin involves reprogramming the Transmission Control Module (TCM) with the latest available software. A small number of customers may experience a ?Stop/Start Ready? message in the Instrument Panel Cluster (IPC) when the vehicle did not perform an auto stop event. This message typically occurs while the vehicle is being driven in Snow Mode. In addition, a small number of customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation, a technician may find one or more of the following Diagnostic Trouble Codes (DTCs) stored in the TCM memory. ? P0887 - TCM Power Control Circuit High ? P1634 - TCM Internal Internal Watchdog Performance ? P061B - Internal Control Module Torque Calculation Performance. ? U0401 - Implausible Data Received From The ECM/PCM. ? P1DAD - Input Shaft/Output Shaft Direction Correlation. ? P1DAF - Incompatible Limp In Action Requested (set in conjunction with U1424 - Implausible Engine Torque Signal Received).