Transmission. When coming to a stop the truck lurches forward from a hard downshift that can potentially cause a rear end collision. I have taken to two Nissan dealerships (Marietta, Ga and Roswell, Ga) and both claimed they could not replicate this issue. I am not sure when the problem started as the salesman drove it from Carrollton, Ga to Marietta for me to purchase. The first time it happened to me was at 150 miles. The truck is currently at 4,500 miles and continues to shift incorrectly. There are no warning lights and the dealership refuses to spend any time solving the problem. I took the service manager for a drive and he confirmed that there is an issue and said he would open a service ticket. Three weeks later he said the mechanic cannot duplicate the problem and says the truck drives normally.