Brake Light On problems of the 2007 Chevrolet Impala

I was approaching a red light where a flat bed truck was stopped and I went to stop behind him. At first the car started to slow when I pressed the brake and then as if I took my foot off the pedal the car stopped stopping and crashed into the back of the tow truck. This was not the first time nor the last time this happened but it was the worst time and I am afraid to drive the car now. I see the number of posts on the internet, hundreds of forums, complaining about the wobbling or vibration that occurs upon breaking. The breaks were changed when I purchased the car in February and it didn't take long for the symptoms to appear until finally I crashed the car. The abs nor brake light come on. It seems that while gm was going broke in 2004 through 2007 they decided cheaper parts were a viable solution to their obvious brink of bankruptcy. And yet when we the american tax payers paid $49. 5 million dollars to bail gm out of debt in December of 2008 they never even considered recalling the vehicles with the unsafe braking systems on them. Ironically the police cars made by gm have an entirely different system, a safer system was installed. Sadly? as long as they still owe the federal government $49. 5 million, the federal government will not force gm to recall these cars with the unsafe braking systems because it will force them into another bankruptcy. Gm is now solidly profitable, its cars have improved, and it has created 23,000 new u. S. Jobs since exiting bankruptcy in 2009 why aren't they correcting their wrongs and why aren't they paying back the $49. 5 million they owe us? when you google 2007 (or any year between 2006 - 2008) Impala lt brake problems it's alarming to see the hundreds of thousands of forums and complaints about the same exact issue.