2015 Chevy Silverado, 19,000 miles . Just had new tires installed and on the way home the service stabilitrak light came on and the front brakes started applying themselves. Front rims hot , rear rims cool. Went to the dealer they did the recall brake programming, that didn't fix it, changed out the Vacuum pump - that didn't fix changed the Booster at $600. On the way to the airport tonight the same exact thing happened and left me stuck on the side of the Freeway - front brakes locked and service stabilitrak light on. Any ideas before I spend more money on things that are fine ???