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U1000 Diagnostic Trouble Code Discussion for February 2005

Class 2 Communication Malfunction

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Trouble Ticket Help Requests for DTC U1000
Help Request Posted
2002 Chevrolet Silverado 2500 HD 6.6L runs on own
U1000: Class 2 Communication Malfunction. ... intermittently the truck would not shut off with the key. You would have to go out to the under hood fuse box and pull the fuse or relay that powers the engine pcm(diesel). Important to know that this truck was hit in left front and lightly rolled (if ther...
February 09, 2005