Harsh upshifts and 1-2 clunk on 2011–2013 minivans (2011–2013)
FCA bulletin 21-012-12 (Rev. A, October 2012) reflashes the powertrain control module on 2011–2013 Grand Caravan and Town & Country minivans with the 3.6L and six-speed built before Sept. 26, 2012. It lists harsh 1-3 upshifts in Economy mode, harsh 2-3 upshifts in normal mode and a 1-2 upshift clunk, and adds shift-schedule and fifth-gear converter lock-up changes to 'improve the shift quality of the 62TE transmission.'[3]
Reported symptoms
- Harsh 1-3 or 2-3 upshifts
- Clunk on the 1-2 upshift after lifting off the throttle