2015 Chevrolet Tahoe - brakes felt hard


car drove fine this morning. Got to work and parked it and the brake assist light came on. When I went to move it up a bit in the spot brakes felt hard. What does this mean.


It means your brake system has a problem.

That means you have lost your power brake assist which is, again, why the brake assist light came on! Since it is only 3 years old it may be covered by a warranty. This SUV needs to be TOWED to the dealer, it is not safe to drive.