21-051-15

Flash: Improved Transmission Shift Quality This bulletin involves flash reprogramming of the Transmission Control Module (TCM) with new software. A small number of customers may experience a Malfunction Indicator Lamp (MIL) illumination or describe one or more of the following conditions. Upon further investigation, a technician may find the listed Diagnostic Trouble Code (DTC) stored in the TCM memory. ? P0711 - Transmission Fluid Temperature Sensor A Circuit Range-Performance. ? When driving on grades the 3-2 downshift is hard to achieve or not available. ? Poor shift quality during a 5-3 coast down.