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:
· P061B - Internal Control Module Torque Calculation Performance.
In addition, some customers may experience one or more of the following conditions:
· 5-4 coast down transmission shift quality enhancement.
· Less than desired low speed drivability and response to accelerator pedal input.
· Less than desired transmission shift quality.
· Transmission is slow to upshift after releasing the accelerator pedal.
