Help us help you. By posting the year, make, model and engine near the beginning of your help request, followed by the symptoms (no start, high idle, misfire etc.) Along with any prevalent Diagnostic Trouble Codes, aka DTCs, other forum members will be able to help you get to a solution more quickly and easily!
got a 2015 chevy truck with traction control, ABS, brake lights on dash also limited power steering info in human device interface message...scan the truck with scan tool...could not communicate with electronic brake control module ..all other systems say no communication with brake control module.so went and checked powers and grounds with brake control module all good......so is this a bad module ?....
Check service information for tsb’s as you could have a part that’s a known issue.
Check the vehicle service information, go thru tests per service information as it may have other suggestions as well may have you try to reflash it. Dealing with something similar on a BCM on a 06 Hummer H3 myself.
You have to check the gm high speed data lines coming in and coming out of abs module. Use a headlight to load test powers and grounds. Check terminals on connector
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