Question

Location of the Upstream O2 Sensor for Bank 1 on a 2015 Chevrolet Silverado 2500HD 6.6L Duramax Diesel? I got the engine code P0030

Answer 1

Here is an image with the location of the Oxygen Sensor. The Upstream sensor is also called Sensor 1, the P0030 code is for the Oxygen Sensor 1 (Front Sensor or Upstream Sensor) Bank 1. Here is the link to the code page with more information about the code: 

P0030 Chevrolet Code - HO2S Heater Control Circuit Bank 1 Sensor 1
Read more: https://www.autocodes.com/p0030_chevrolet.html