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U1300 Diagnostic Trouble Code Discussion for December 2012

Class 2 Data Line Short To Ground

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Trouble Ticket Help Requests for DTC U1300
Help Request Posted
2006 Cadillac CTS 3.6L MIL Lamp on VIN: 1G6DP577X6
U1300: Class 2 Data Line Low Voltage. ... and security lt on. Had codes p0627, p1629, u1000, u1300, a new ecm fixed the ignition lock cyl problem but the same trouble codes came back within several minutes of run/idle time. The doo...
December 09, 2012