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Message: [QUOTE="6.0 Tech, post: 1564272, member: 23001"] Is the exhaust still on the truck? If it’s not try unplugging the plug on the pcm that’s closest to the engine, see what that does. It sounds like you’ve got something pulling vref down and the trucks going into retard mode because of it. May have to get a scanner on it to verify what’s actually going on. I’ve had sensors and modules cause it. So it’s not really easy to say it’s probably this… Sent from my iPhone using Tapatalk [/QUOTE]

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