I too had issues with loss of power and lack of acceleration and had a very reputable local shop look it over, bottom line they could not even recognize a Cat data port, so do yourself a favor and get to a service center that specializes in Cat. I took mine to a Freightliner (FCC) center and they upgraded the ECM programing which fixed the issue like magic.
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Jim and Terri
2004 Winnebago Journey 36G 350 Cat C-7, SMI AF1, 2013 GMC Terrain
Central Valley California-for now
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