Looking for some help here. I have a 2016 lml duramax. I keep getting a p0672 code for #2 glow plug. I have replaced the plug with no change. I load tested the wire and also ohm tested it. All is good with the wire. Installed new glow plug control module and still keep getting the same code. Also if I unplug another glow plug it does not throw a code. Anybody have any ideas as to what could possibly be my issue. I have exhausted my thoughts and options to come up completely clueless on what else it could be. Also scan tool shows on test that all glow plugs pass and self check ok. But still have a mil light and code coming up.