NHTSA Complaint #11640851 — 2014 NISSAN SENTRA

I was driving down the highway and my vehicle all of a sudden started sputtering. The speed dropped quickly as a car almost rear ended me. Then it went back to normal so I continued driving and then it did it again and stopped completely. There’s no check engine light on or any other warnings. Had the vehicle towed to Firestone and they told me it is the transmission. They said I should call Nissan dealership because my model and year is known for this problem and should be a recall. So I call Nissan and they said yes there is some recalls for that year and model but my vin number isn’t on recall list. That doesn’t make since to me. Are they installing different transmissions in the same year and model?