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Originally Posted by NH-Titan
My check engine light came on today also. I have a scangauge to I read the code and it was u1000. I checked into it and it has something to do with a loose ground. I reset the code so I have to wait for it to come on again before I bring it in to the dealership.
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Yeah U1000 is CAN communication errors. All the different computer in the truck communicate via CAN, a grounding issue cause them not to be able to talk to each other. It involved taking the dash apart and repairing the ground connection.
