2018 Chevrolet Silverado 1500 brakes problems

In an accident where I was the at fault driver, I was approaching a stop light and did not notice the red light nor the car stopped until approximately three seconds before impact. Once I recognized what was happening, I immediately slammed on the breaks. I hit the other driver in the rear of his vehicle. As stated above, I hit my breaks about 3 seconds before impact, but my ABS did not activate; instead my breaks locked and I slid 15-30 feet into the other vehicle.

When the vehicle was started, a loud squealing sound was heard coming from the vicinity of the front of the engine. While under the oem bumper to bumper warranted period, chevrolet dealer number one was not able to determine the problem or repair it. Furthermore, the problem was not reported in the vehicle history as reported. A short period later, chevrolet dealer number two was able to locate the problem and repair it at my personal expense as the warranted expired on time as opposed to mileage.