Quote:
Originally Posted by Bassett
I have a scan tool but I believe it requires codes to tell me anything, which I do not have.
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How hard does it start in the -8? I remember one day it was -10 overnight and my buddy's truck with the bad glowplug module took about 60 seconds of cranking before it came to life. His didn't pop up a CEL, but he did have an underlying code for it though (which I believe glowplug codes also do). Have you tried scanning or haven't bothered because of no CEL?
If you have no codes, not sure what to tell you as I'm not a Duramax mechanic. I do know that glowplug modules on the 04.5 and 05 Duramax trucks were notorious for going out and yours sounds typical of that issue.