Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Circuit/System Description
The electronic brake module (EBCM) receives a GMLAN message from each of the network modules. Each module contains its own unique identification (Id) code that must be learned into the EBCMs memory. Once all the IDs have been learned and vehicle speed is 25 mph, or greater, the EBCM continuously compares Ids in the GMLAN message to its learned Ids to determine if all the network modules are present.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.