Duramax Fourth Generation: 2007.5-2010 (LMM)
I have a 2009 LMM (400 000km) that was running just fine but had a couple bad glow plugs. I swapped the glow plugs then went to start it and it would crank but not start. I have done a couple things to try and diagnose the issue but cant seem to figure it out and cant find an answer online.
No...