Well got my truck back today and they indeed replaced the second NOX sensor. I specifically asked if they had updated them sense 2011. The service guy said the part number had remained the same. He was indicating nothing had changed. I have to wonder if he is correct. Would they change the part number if they upgraded the part. As I said in my first post I love this truck, and don't want to go gas, so I hope this will solve my issues.
Anybody know the answer to whether or not the part number will change if they upgrade the sensors?