NHTSA complaint #11604348

Owner complaint summary

I was traveling at expressway speeds (70 mph) when traffic in front of me hit the brakes quickly to avoid an object in the road. At this time, I hit my brakes relatively hard and fast in what I would describe as a panic brake. I avoided incident here. About a mile further up the road, traffic in front of me hit the brakes once again. At this time, I also hit my brakes, but I could not. My brake pedal was hard as a rock, and it would push down only about 2 or 3 inches with little to no effect. I was afraid I might break the pedal arm. I was able to maintain my lane until about 40 mph at which time I was forced to hit the shoulder to avoid colliding with the cars in front of me which were now stopped. I pressed the brake pedal hard and coasted along the shoulder of the expressway for about 40 or 50 yards, rolling past the stopped traffic. A few minutes after my car came to a complete stop, the information panel on my dashboard read "service brake assist". My car was towed to a GM dealership local to where I came to a stop. The documentation from the dealership, as well as what I was verbally told, indicates that there was an internal failure of the vacuum pump. According to the service manager, there was nothing I could have done to prevent this. Obviously, I was extremely lucky. If this would have happened in two-lane city traffic, or approaching a stop light I would have been forced to veer into oncoming traffic or simply barrel into those in front of me. I know this, because for the last month, as I'm driving, I constantly analyze what would happen if my brakes were to go out like that at various points along my drive. Often times, my only option would be to brace for a major accident or land my car in the front yard of a business. This catastrophic failure could have easily killed me, and/or other drivers on the road. Other people will not be so lucky, and I know this. For that reason, it's time for NHTSA to finally take action on this matter.