× 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

U0107 Diagnostic Trouble Code Discussion for June 2011

TAC Module Serial Data Circuit Malfunction

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 U0107
Help Request Posted
2005 GMC W5500 Forward W5S042 5.2L MIL Lamp on VIN: 4KDB4B1U75
U0107: active. tested 2 com wires from pcm to tac module. ok. tried new ignition switch, tried disconnecting alternator cable and regulator plug, tried jumper from ground to engine. when running with key off, seems to be 2.5v on black/yellow wire (gd wire). turn on wipers or...
June 03, 2011