Flash: Transmission Shift and Drivability Enhancements
This bulletin involves reprogramming the Transmission Control Module (TCM) with the latest available software.
Some customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation, a technician may find the following Diagnostic Trouble Codes (DTCs) stored in
the TCM memory:P1B13-00 - Park by Wire Unintended Out Of Park Position.
P1DCD-00 - TCM Monitoring Processor Performance Multiple Clutches Locked Up.
U0103-00 - Lost Communication With Electric Gear Shift Module.
P1CC9 - Unable To Engage Gear.
P1DDE-00 - Ignition Run/Start Input 1-2 Correlation.
The following improvement is also included in this update:Shifter interlocking improvement in an event of brake signal loss to the TCM.
