2009 Pontiac G6 cruise control problems

While driving, cruise control will disengage and brake lights will flair on. Than when tap brakes, brake lights will shut off. Within a couple seconds, they will turn back on. When actually going to press on the brakes, have no brake lights than. This has also happened without using cruise control, just driving in general. Break lights will come on, than when press on the brake, they shut off. Couple seconds later, come back on.

My 2009 pontiac g6 rear brake lights are working opposite of how intended. When the brakes are not applied the brake lights remain activated, when I depress the brake pedal the brake lights turn off. The cruise control is also inoperative, most likely linked to the brake light issue. I called the dealership where I purchased the vehicle new and was told that nothing would be done about the issue because the warranty was over.