November 20, 2015 Service bulletin

Flash: Transmission Shift And Drivability Enhancements

Ram technical service bulletin 21-039-15 REV B for 2015-2016 Ram Promaster City.

Bulletin number: 21-039-15 REV B
Component: Power train
Summary: 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 Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Codes (DTCs). ? P1720 - Output Speed Sensor-Wheel Speed Rationality. ? P1634 - Output Speed Sensor-Wheel Speed Rationality. ? P1DCCD - TCM Monitoring Processor Performance Multiple Clutches Locked Up. ? P0887 - TCM Power Control Circuit High. ? P0711 - Transmission Fluid Temperature Sensor A Circuit Range-Performance. ? P1DAD - Input Shaft-Output Shaft Direction Correlation. ? P1CC9 - Unable To Engage Gear. In addition to the above conditions, this software release also includes improvements to: ? Transmission shift quality. ? Enable the capability to capture non Diagnostic Trouble Code (DTC) control module data through the Uconnect Data Recording system.

Owners of these vehicles have filed 22 complaints in the transmission category.

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