I WAS BACKING INTO A PARKING STALL THE THE BRAKES FAILED AGAIN! BRAKE PEDAL WAS SOLID AND WOULD NOT DEPRESS TO SLOW THE TRUCK TO A STOP. ONLY AFTER EXTREME PEDAL PRESSURE WAS THERE ANY BRAKING ACTION, BUT ONLY SLIGHT. BECAUSE OF THIS I HIT THE WALL BEHIND THE TRUCK. IF SOMEONE WAS THERE, I WOULD NOT HAVE BEEN ABLE TO STOP. GM/CHEVROLET HAVE A SERVICE BULLETIN OUT ON THIS ISSUE. AN INTERNET SEARCH CAME BACK WITH 312,000 RESULTS. I'VE TALKED TO MY SELLING CHEVROLET DEALER AND THEY RELUCTANT TO DEAL WITH IT. DOES SOMEBODY NEED TO DIE BEFORE SOMETHING IS DONE. THIS IS THE 4TH OR 5TH TIME MY BRAKES HAVE FAILED.