21-031-14

Flash: Quick Learn Enable And P215C Output Shaft Speed, Wheel Speed Correlation Set While Braking This bulletin involves selectively erasing and reprogramming the Transmission Control Module (TCM) with new software. The following Transmission Control Module (TCM) calibration update is being released to enable the new wiTECH based ?Quick Learn? procedure to be performed anytime the transmission adaptation memory cells are cleared or addressing customer concerns of poor shift quality. It also addresses customer concerns of Malfunction Indicator Lamp (MIL) illumination and Diagnostic Trouble Code (DTC) P215C Output Shaft Speed, Wheel Speed Correlation setting on AWD equipped vehicles.