U0121 Diagnostic Trouble Code Discussion for March 2022
Lost Communication With EBCM
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| Help Request | Posted | |
| 2012 GMC Sierra 2500 HD SLE 6.0L ABS/Brake lights on VIN: 1GT220CG9C U0121: loss communication with Anti-lock brake system Module. Need some help with communication fault codes! Have P0121 (loss comm. with EBCM) in Transfer case Module. Have p0137 (loss comm. with Trailer Brake module) in Body control module. Have no communication with EBCM and Trailer Brake modules, but able to commu... |
March 27, 2022 |
