U0121 Diagnostic Trouble Code Discussion for August 2017
Lost Communication With EBCM
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 U0121
| Help Request | Posted | |
| 2009 GMC Savana 2500 4.8L No Start, Cuts out, Stall VIN: 1GTGG29C49 U0121: loss of comm to ebcm. ... then finally not restarting. once the van seemingly cools down it starts. the ecm, bcm & tcm showed up with the loss of communication with ebcm code (U0121) and when I intermittently get communication with the ebcm (it... |
August 10, 2017 |
