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U1000 Diagnostic Trouble Code Discussion for December 2018

Class 2 Communication Malfunction


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Trouble Ticket Help Requests for DTC U1000
Help Request Posted
2004 Chevrolet Classic LS 2.2L No Start VIN: 1G1ND52F44
U1000: Class 2 Communication Malfunction. ... starting. It will crank over fine, but not start. We have only had it happen twice, and both times it would crank and crank, but as soon as you let off the key and tried cranking it again, it would immediately start. There was not sufficient time eithe...
December 17, 2018