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Message: [QUOTE="TitoF250, post: 1566876, member: 38855"] I believe it was the fuse feeding the PCM or ECM. I'm going in to pickup my truck today so I'll know a bit more. The said they found the issue. Apparently, my air compressor that is powered from upfitter switch #1 has gone bad. They removed it from the truck and all the symptoms have gone away. I have a hard time believing that could cause all of these issues if the switch was off when the problem happened. I figured it'd be a connector/wiring harness issue like you had found. Could you post a photo of that connector? Also do you have the part #? [/QUOTE]

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