C1255 Chevrolet Code - EBCM Internal Malfunction

C1255 indicates an "EBCM Internal Malfunction," meaning the Electronic Brake Control Module (EBCM) has detected an internal fault or communication issue within its circuitry.

Common symptoms include the ABS warning light illuminating, loss of ABS functionality, and possibly reduced traction control system performance.

The code can be caused by internal EBCM failure, poor electrical connections, corroded or damaged wiring, or software glitches in the EBCM.

Yes, a poor or corroded ground connection to the EBCM is a common cause of the C1255 code and should be checked during diagnosis.

While the vehicle may still be drivable, safety systems like ABS and traction control may not function properly, increasing the risk of skidding or loss of control in certain conditions.

Technicians typically use a scan tool to confirm the code, inspect wiring and connections to the EBCM, check the module's power and ground circuits, and perform EBCM self-tests if available.

In some cases, reprogramming or updating the EBCM’s software may resolve the issue. However, if the module has an internal hardware failure, it will need to be replaced.

Repair costs vary depending on the cause, but EBCM replacement can range from $300 to $1,200, including parts and labor. Simple fixes like repairing wiring or ground connections may cost significantly less.

Clearing the code with a scan tool will remove it temporarily, but it will likely return if the underlying problem is not addressed.

If you suspect the EBCM is faulty, have a professional technician perform a thorough diagnosis to confirm the issue before replacing the module, as it is an expensive component.