A month customer service called me and gave me a case number to have my 2014 sentra looked at. The car has a noisy transmission. They told me i would have to pay for the diagnosis on the trans and i agreed. I drove the vehicle to nissan in victorville, calif. The dealer took the car and plug the diagnostic equipment in and it blew up the trans. Cpu unit. The car was down for a week and the repair cost $ 900. The original problem i took the car in for was never repaired and still makes noise. The transmission was replaced a little over a year ago. I have been back at least 2 times while under warranty and they have not found the problem yet. I need help! steven slavik [protected]