SRX 2013 ABS Electronic module part number is 20842710

How can Cadillac discontinue the ABS Electronic module part number is 20842710. Search the Internet nothing around even looking for an aftermarket doesn’t look good. Don’t see one need help. Where do I begin to find part. I can’t believe Cadillac would discontinue this part. It’s a part of the brake system. It’s not like discontinuing a doorhandle.