Emissions check engine light on 2013 Chevy 3500 Duramax?

Don't know about anyone else but we have had 4 "glow plugs" short out since November 2013, each time we got the check engine light. The truck performed well without any other issues. A check of the code fault will give you the answer you are seeking. Without a code check it is just speculation on the part of everyone to determine your issues. Many automotive parts stores will check your codes for free...