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U1300 Diagnostic Trouble Code Discussion for February 2012

Class 2 Data Line Short To Ground

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Trouble Ticket Help Requests for DTC U1300
Help Request Posted
2004 Cadillac CTS 3.6L See Text VIN: 1G6DM57744
U1300: Class 2 Data Line Low Voltage. ... in because shifter won't come out of Park and now key won't release to take out, stays in accessory , but will crank and run. Has U1300 in ECM, and U1000 in all other modules except Rear Integration Module, which does no...
February 09, 2012