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U1016 Diagnostic Trouble Code Discussion for August 2014

Serial Communications Malfunction

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Trouble Ticket Help Requests for DTC U1016
Help Request Posted
2003 Chevrolet Impala 3.4L No Start VIN: 2G1WF52EX3
U1016: Serial Communications Malfunction. ... morning as a no start. No crank until I jump the starter relay, then no fuel after a second. Scanned for codes and the PCM won’t communicate with the scanner. All other modules communicate and most have codes for missing class 2 serial data. (U1000, U1255,...
August 05, 2014