Join Now
International Automotive Technicians Network

U1000 Diagnostic Trouble Code Discussion for July 2014

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
2004 Chevrolet Silverado 1500 LS 5.3L Poor Idle Quality, Misfire VIN: 2GCEK13T24
U1000: Class 2 Data Link Malfunction- SRS System. ... it had a mis. scanned it and found p0101, p0300, p0171, u1000. it has just a slight miss at idle n gear with the a/c on. checked compression was good, checked fuel pressure was n spec. did some looking around and could only come up with a mass air flow int...
July 02, 2014
2003 Chevrolet Express 2500 5.3L No Start VIN: 1GCFG25T13
U1000: In SDM Class II data link malfunction. I have a real hair puller here. This van is a cranks/no start. Security telltale DOES NOT illuminate. No DTCs in ECM or BCM. Can communicate with all modules. Can command telltale on in IPC. Passlock cyl. voltage = 3.2 volts. ECM shows VTD fuel enable=No. All ...
July 16, 2014
2003 Chevrolet Express 2500 5.3L No Start VIN: 1GCFG25T13
U1000: In SDM Class II data link malfunction. I have a real hair puller here. This van is a cranks/no start. Security telltale DOES NOT illuminate. No DTCs in ECM or BCM. Can communicate with all modules. Can command telltale on in IPC. Passlock cyl. voltage = 3.2 volts. ECM shows VTD fuel enable=No. All ...
July 17, 2014