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U1255 Diagnostic Trouble Code Discussion for September 2009

Class 2 Communication Malfunction

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Trouble Ticket Help Requests for DTC U1255
Help Request Posted
1998 Cadillac DeVille 4.6L No Start, Stall VIN: 1G6KD54YXW
U1255: Loss of serial data. This Cadillac is driving me insane. Will run for 3 seconds if you turn the key off then crank. Dash is going nuts prnd2l is flashing, air bag light is on, traction light is on theft system problem flashing fuel econ reads blank. No communication thru scanner. ...
September 29, 2009