Duramax Fifth Generation: 2011-2016 (LML)
My truck 2011 3500 HD 6.6 had been throwing codes P2201, P2202, P2203, P2204, Bank 1 Position 1 Nox Sensor.
GM dealer confirms it, and says we can't find a sensor for you.
I bought one at O'Reilly, with the 1387 PN on the box and the actual sensor has 9594 printed on it (Bosch part).
El...