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U1255 Diagnostic Trouble Code Discussion for October 2008

Class 2 Communication Malfunction

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Trouble Ticket Help Requests for DTC U1255
Help Request Posted
2001 Chevrolet Impala 3.4L Poor Idle Quality, Surge, Stall VIN: 2G1WF52E61
U1255: Class 2 Communication Malfunction. ... and hard to restart. Had some VTD codes and the U1000 codes. I replaced the key and lock cyl and did the passlock relearn. The vehicle started and ran for an hour or so. I put about 4 miles on the vehicle and let it run again. No problems. The cust picked ...
October 16, 2008