Flash: Transmission Diagnostic and Shift Enhancements
This bulletin involves reprogramming the Transmission Control Module (TCM) with the latest available software.
Customers may experience the following condition:During an engine limp mode condition, the transmission remains in a fixed gear.
Poor shift quality (bumps) on coast down shifts.
This software update also includes the following enhancements:Improved transmission adaptation (to address coastdown shift bumps) (Sales Code ESG only).
Allow transmission gear shifting in the limp-in mode rather than fixed gear.
