Shift-quality complaints addressed with an adaptation-learn procedure (2012–2014)
FCA bulletin 21-012-14 (Rev. A, July 2014) covers 2012–2014 Charger and 300, 2013–2014 Ram 1500, 2014 Durango and 2014 Grand Cherokee with the 845RE, 8HP45 or 8HP70. It tells dealers to rate shift quality when customers complain and, if needed, run an adaptation drive-learn, because the learned clutch values reset when the control module is replaced or cleared.[8]
Reported symptoms
- Harsh or inconsistent shifts, especially after transmission or control-module service