A harsh 4-3 downshift or other shift quality issues may develop. Revised transmission control module (TCM) software has been released to address these concerns.Google+
Car Problem Reports
Dodge Charger Transmission Shift Quality Issues
Dodge Charger Problem
Drive Trains Affected: AWD, RWD
Average Mileage: 43,250 mi (4,000 mi - 87,000 mi)
Visitor, 2009 Dodge Charger, RWD, 87,000 mi
Transmission shudder at all shifts replased torque converter and FCC solenoid
Stiil having problems will go for the pcm flash next also fluid flussed twice.
Same problem where I hear a rumbling sound from drive train when attempting to accelerate gradually or the road inclines. If I let off of the accelerator or force a downshift, it goes away until the next hill. Dealer has looked at it twice and was unable to resolve. Flashing the transmission made no difference. Waiting on a call back from dealership to schedule an appointment so the regional service rep can take a look.
Visitor, 2013 Dodge Charger, AWD, 4,000 mi
Hard up and down shifts in first 3 or 4 gears. Seems worse when during first few miles after starting.