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U0140 Diagnostic Trouble Code Discussion for July 2013

Lost Communication With BCM


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Trouble Ticket Help Requests for DTC U0140
Help Request Posted
2007 GMC Sierra 2500 HD SLT 6.6L No Start, MIL Lamp on VIN: 1GTHK23607
U0140: loss of comm with BCM. Hello to all, I have this Duramax that has me running in circles. The truck came in with no gauges, flashing A/C light, and no start. If you let it sit for a few minutes it will start, A/C works and the gauges come on line. After about 5 minutes at idle the ga...
July 18, 2013
2007 GMC Sierra 2500 HD SLT 6.6L No Start, MIL Lamp on VIN: 1GTHK23607
U0140: loss of comm with BCM. Hello to all, I have this Duramax that has me running in circles. The truck came in with no gauges, flashing A/C light, and no start. If you let it sit for a few minutes it will start, A/C works and the gauges come on line. After about 5 minutes at idle the ga...
July 18, 2013