I wish ya luck. My wife's vehicle has had this problem forever. It's a 2013 escalade and we bought it in 2016 or 17 with 56k miles. It has over 100k on it nowadays. Every since we've owned it it would occasionally ding and flash the service stabiltrack message and the cruise would kick off if it was on. I replaced the brake switch as mentioned above and still no fix. We were gonna trade it in this last spring, not because of this problem but just to get a lower mileage vehicle, and when the dealer pulled Carfax we found out that our vehicle was a lemon law buyback in California not long before we bought it. Further investigation showed several records of it going to the dealer for this same problem and I think they'd put 3 brake switches in it. Sooooo, yeah, being branded a buyback killed our trade value. It's weird cuz it may not give the message for weeks, then it'll do it 20 times in a 10mi trip. Sometimes when you hit a bump and sometimes just on a smooth rode. Sometimes as soon as you take it out of park. I was following my wife down the highway one night and her brake lights were constantly on. I called her and she said she wasn't touching the brakes. So anyhow, I'm gonna try to figure this gremlin out someday.