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:
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.
