2008 Pontiac G6 brakes problems

In september of 2014 my vehicle (2008 pontiac g6) was involved in a server accident when I was on the I-75 interstate merging onto the I-20 ramp when I lost control of my vehicle upon braking and jerking of the steering wheel resulting in loss of all control of my vehicle at this point. I hit the guardrail and one other vehicle was involved as well. The city of atlanta is where the incident occurred.

Tl* the contact owns a 2008 pontiac g6. While driving various speeds, the brake lamps illuminated without the brake pedal being depressed. When the brake pedal was depressed, the brake lamps failed to illuminate. The vehicle was taken to a dealer where it was diagnosed that it needed to be repaired per NHTSA campaign number: 14v252000 (electrical system, electrical stability control, exterior lighting, service brakes, hydraulic, vehicle speed control). The vehicle was repaired; however, the failure recurred.