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Old 12-08-2020, 12:02 PM   #16
Steve Cole
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Join Date: May 2012
Location: Faith,NC
Posts: 1,623
Re: Anyone ever see this fault code? It sounds serious!

Quote:
Originally Posted by ls1nova71 View Post
If you are not running the GBCM, then this will happen. The PCM defaults to 13.7v all the time. I ran a truck this way for a while, not sure how long it will last this way though as I'm sure it will shorten the life of the alternator.
Trying not to sound stupid here, but what is a GBCM? How do you "run it"?

Thanks for the manual pages EVRLET, I couldn't read the wiring diagram though.
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