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International Automotive Technicians Network
Re: 2004 C7 miss under load
Posted to HD/Fleet Forum on 2/16/2018

I would monitor the atmospheric pressure sensor PID on ET. I have seen them become biased and when they do, they also throw the boost sensor off for some reason. I had one drop to 8 psi (I am at Sea level, should be 15) and the truck would run like junk becaus... Login to read more.