× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network

U0140 Diagnostic Trouble Code Discussion for July 2013

Lost Communication With BCM

Note: This is a professional automotive technician's resource.
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.

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