2006 duramax with p0677 code

[njkroeker]

I pulled a p0677 code and it's telling me #7 glow plug or wiring. just wandering how hard it is to change and if it is the back one behind the fuel filter.

[gmtech4]

inner fender comes out and they are right in front of your face lol

 

they are easy ,just look and see,

 

make sure which one as the cyl configuration is different with the dirtymax