The brake system failed and my car is now in a salvage lot. I believe the car will remain there only until I submit the car title. While driving in heavy traffic I was unable to make a sudden stop to avoid hitting the car in front of me. I had enough time to stop, but the brakes failed to engage properly. The brakes were very stiff and vibrated or pulsated as I applied the brakes and my car wouldn't stop prior to colliding with the car in front of me. My safety and the occupants in the other car were at risk. The life of a pedestrian, if involved, could have resulted in death. Luckily, there were no serious injuries and exterior damage appeared minimal but my car suffered serious internal damage. I was not able to confirm the problem with the dealership. My phone calls were not returned. I also contacted Chevrolet and now waiting for a follow-up call. The car was only inspected by the insurance appraiser, who deemed my car a total loss because the car frame was cracked on both sides, air condenser damage, exterior damage plus more. The insurance co. had my car towed to a holding parking lot for salvage. My greatest concern is if this had been a situation where I was unable to stop suddenly to avoid hitting a pedestrian and killed someone! The appraiser suspected the air bag sensor might have failed since the impact was hard enough to crack the car frame. Seven days prior to the accident I had rear brakes and roters replaced at a Chevrolet dealership. They also looked int