U1000 Diagnostic Trouble Code Discussion for March 2007
Class 2 Communication Malfunction
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| Help Request | Posted | |
| 2001 Chevrolet Malibu 3.1L No Start VIN: 1G1ND52J91 U1000: Class 2 Communication Malfunction. ... pressure switch short out the bus line and not start the vehicle.The vehicle returned after we repaired the fuel pump for a no start condition on Jan. 24. found fuel pump bad and replaced. Customer has returned vehicle and still complaines of sometime not ... |
March 01, 2007 | |
| 2000 Oldsmobile Silhouette GLS 3.4L No Start VIN: 1GHDX03E8Y U1000: Class 2 communication malfunction. ... unplugged modules on data line to see if one was shorting. Cannot communicate with theft detterant system. Retrieve code from PCM - U1000 and P1626 - run test for P1626 - replace PCM - no difference - check ohms and voltage from PCM to BCM and to starter r... |
March 15, 2007 |
