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U1300 Diagnostic Trouble Code Discussion for October 2006

Class 2 Data Line Short To Ground

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Trouble Ticket Help Requests for DTC U1300
Help Request Posted
2003 Chevrolet Silverado 1500 5.3L Poor Idle Quality VIN: 2GCEC19V13
U1300: class 2 shorted to ground. ... last week with a bad alternator. We fixed the alternator and sent it out. The customer called later to say that it was still dying at idle, which of course they had not said before. I checked the codes, the only code was a U1300- class 2 shorted to ground....
October 17, 2006