Harsh, delayed or busy shifting addressed by repeated software flashes (2014–2015)
FCA released a series of transmission control module reflashes for 2014 Cherokees with the 948TE. Bulletin 21-018-14 (May 2014) lists improvements to garage shifts, coastdown shift quality, throttle response and 'management and prevention of busy shifting,' and bulletin 21-032-14 adds an adaptation-learn procedure for 2014–2015 Cherokee and 2015 Chrysler 200 owners whose shift quality 'may not meet the customers expectations.' A 2016 bulletin (21-016-16) supersedes earlier 2015 flashes and adds diagnostic-code fixes.[3][5][16]
Reported symptoms
- Rough or delayed shifts, including Park-to-Drive/Reverse engagement
- Busy or hunting shifts
- Check-engine light with transmission codes such as P0810 or P1CC9