Accelerator Pedal problems of the 2001 Lexus GS300

The contact owns a 2001 Lexus Gs300. While driving 65 mph the accelerator pedal caused the vehicle to surge and increase the speed to 85 mph. The contact had to apply both feet on the brake pedal to slow the vehicle down. The contact took the vehicle to a dealer to have the accelerator pedal replaced and the dealer refused to replace the accelerator at the contacts request. The contact took the vehicle to an independant mechanic to have the accelerator pedal replaced and it was replaced. The contact called the manufacturer to notify them regarding the failure and the manufacturer has not responded to the contact. The contact has sold the vehicle. The failure mileage was 93,500.