Lost Communications With BCM
Table of contents
C0291 GMC Possible Causes
- Faulty Electronic Brake Control Module (EBCM)
- Electronic Brake Control Module (EBCM) harness is open or shorted
- Electronic Brake Control Module (EBCM) circuit poor electrical connection
How do I fix code C0291 GMC?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Cost of diagnosing the C0291 GMC code
The cost of diagnosing the C0291 GMC code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Anti-Lock Brake System (ABS) Warning Light ON
- Engine Light ON (or Service Engine Soon Warning Light)
C0291 GMC Description
The Body Control Module (BCM) sends a state of health serial data message to the Electronic Brake Control Module (EBCM) within 5.5 seconds after the ignition is turned ON. The EBCM fails to receive serial data from the BCM.