× 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

U1000 Diagnostic Trouble Code Discussion for November 2012

Class 2 Communication 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 U1000
Help Request Posted
2003 GMC Envoy XL SLE 4.2L No Start VIN: 1GKET16S93
U1000: class 2 data malfuction. Good Morning. This envoy VERY intermittently will not start and sets the four codes above afterwards. Never have I experienced the symptom or these codes while in our possesion. Anyone know of a common link that triggers this combination and symptom. Many tha...
November 15, 2012
2003 Chevrolet Corvette 50th Anniversary Edition 5.7L MIL Lamp on VIN: 1G1YY32G33
U1000: Class 2 Communication Malfunction. We have an 03 vette that every once in a while when you go to start the dash lights up like a christmas tree, it still runs ok but with limited power. The codes all refer to a communication problem. We replaced the battery and cleaned the main grounds up, beca...
November 20, 2012