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.
