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U1301 Diagnostic Trouble Code Discussion for April 2010

Class 2 Data Line Short To Voltage

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Trouble Ticket Help Requests for DTC U1301
Help Request Posted
2002 Chevrolet Silverado 2500 HD 6.6L Hesitation, MIL Lamp on, erattic shifting VIN: 1GCHK23142
U1301: Class 2 Data Line Short To Voltage. Thanks in advance; initial complaint was due to erratic trans shifting, cluster issues, and door locks. tried to scan vehicle, and it wouldn't communicate. if you put the ignition switch not quite to the run mode then it would. replaced switch, same problem. i...
April 07, 2010