If anyone is driving a ram 1500 the 09 and newer body style and have this recall, beware the affects of the malfunctioning part it can range from the rear end locking up because the pinion falls into the ring gear, up to the rear end locking up shattering the drive shaft and taking out transmission/transfer case
Preventive measure: remove your drive shaft and check your pinion nut torque

Had this happen to a vehicle I was test driving today, customer stated a clunking noise in hard acceleration
Took it to a empty Parkin lot and launched it had a couple times finally hear the clunk, tried to replicate it once more and that's when the transmission fell apart, literally.