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B3031 Diagnostic Trouble Code Discussion for January 2011

Security system in learn mode

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Trouble Ticket Help Requests for DTC B3031
Help Request Posted
2005 Chevrolet Cobalt 2.2L MIL Lamp on VIN: 1G1AK52F45
B3031: security system in learn mode. ... no codes stored in all modules, diagnosed as a bad pcm due to no signal being sent to the crank relay, replaced and programmed pcm with a new unit from gm. vehicle would now start and shut off as i expected, tried do perform long relearn with no luck, then...
January 28, 2011