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C1298 Diagnostic Trouble Code Discussion for February 2006

PCM class 2 serial data link fault

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Trouble Ticket Help Requests for DTC C1298
Help Request Posted
2002 Pontiac Montana 3.4L MIL Lamp on VIN: 1GMDU03E42
C1298: serial data in abs module list. ... and data can be read, after starting, will not communicate data with aftermarket scanner (snap-on), and these codes all return. When abs module left out of circuit, all can be read but code u1040 comes back. Have checked ...
February 18, 2006