Flash: Transmission Diagnostic and Shift 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 Code (DTC) stored in the
TCM memory:P1DCD-00 - TCM Monitoring Processor Performance Multiple Clutches Locked Up.
In addition, customers may also experience the following condition:During an engine limp mode condition, the transmission remains in a fixed gear. This update allows transmission gear shifting while
in limp-in mode, rather than a fixed gear.
Bumps on 2-1 and 6-5 down-shift while braking.
This software update also includes the following enhancements:Updated version with new software level.
Improved 5-4 down-shift.
