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Glow Plug Control Circuit codes P0671 to P0678 #7 P0677
 

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Hey bud, I have had a few customers with such cylinder specific glow plug codes on the LBZ. If you have had the updated software for the glowplug controller flashed and are still getting this code, chances are the actual glow plug for that cylinder is n/g. All of the instances I have come across thus far, the glow plug was under warranty. That being said, I haven't verified the glow plug as the actual cause myself in these cases b/c the dealer has replaced them for free under warranty. Hopefully that gives you a clearer focus on your objective.:)
 

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Discussion Starter #4 (Edited)
I have not seen it in the history so mabe it is asoft ware prob.

I cleared it 2 days ago and it has not came back.:confused:

I bought truck used and it now has 137,000miles and i don't think they will replace them under warenty.
 

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Did you replace the glow plug or just clear the code? I would have to resonably assume if the MIL was on, there was trouble causing the code. But, it was worth a try I suppose.
 

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I think that will fix ya up. Good luck.:thumb:
 
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