I didn't have any issues prior to the brake recall, but since the brake recall I will sometimes get into the truck (after having remotely started it) press the brake pedal and it's stiff, and press the start button to have all the errors come up "ECS error, speed limited error, trailer brake error" and check engine light stays on, and drive that way for a while, and then after a few ignition cycles later the check engine light is gone.
I only had one issue after the recall where I actually lost braking, but the GM dealer supposedly fixed that.