U1040 Diagnostic Trouble Code Discussion for September 2009
Lost Communication With Antilock Brake System Module
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| Help Request | Posted | |
| 2003 Pontiac Aztek 3.4L no guages, lost comm VIN: 3G7DB03EX3 U1040: Lost Communication with EBCM. Guages inop (except Speedo) Odometer reads error. Shifter stuck in park. Backup lights inop. Someone before me has installed an external start button. The vehicle starts and runs fine. I cannot access the PCM using my Genisys. I connected with the other module... |
September 03, 2009 |
