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Re: LEAN P0171 & P0174
Posted to HD/Fleet Forum on 5/30/2018 4 Replies

Ok, just wanted to be clear on that. I don't work on HD anymore, but since this is a 6.0L, Is the PCM a GM product? If so, do you have a Tech II or is it a Global Vehicle? Do you have a scan tool that will re-set fuel trims? Are you sure the codes are actually... Login to read more.

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