On the way home in my 2012 cummins, the check engine light came, but the truck was running extremely well.

when they replace the bad sensor, it didn't seem to run as well. maybe i'm just getting old.

 

Fire,

If you think there is still something not right after having the dealership service the vehicle I would recommend a return call or trip to the service department at the dealer and see if there is anything than can help with. If you think something is off, you would know best since you are the one driving it all the time.

 

i think they reset the computer, the engine and trans had to learn my driving style. i may have been driving it to easy?