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U1000 Diagnostic Trouble Code Discussion for October 2008

Class 2 Communication Malfunction

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Trouble Ticket Help Requests for DTC U1000
Help Request Posted
2001 Chevrolet Malibu 3.1L No Start, Cuts out, Stall VIN: 1G1ND2D116
U1000: Class 2 Communication Malfunction. no
October 05, 2008
2004 GMC Envoy SLE 4.2L MIL Lamp on VIN: 1GKDS13S64
U1000: CAN Failure. I'm beginning to hate CAN failure diagnostics, We got these codes on this Envoy which turns on the ABS, and the Brake warning lights and the A/C stops working. When we checked the BUSS connector to see which module was not communicating all modules were there ...
October 09, 2008
2001 Chevrolet Impala 3.4L Poor Idle Quality, Surge, Stall VIN: 2G1WF52E61
U1000: Class 2 Communication Malfunction. ... and hard to restart. Had some VTD codes and the U1000 codes. I replaced the key and lock cyl and did the passlock relearn. The vehicle started and ran for an hour or so. I put about 4 miles on the vehicle and let it run again. No problems. The cust picked ...
October 16, 2008