Transmission Failure problems of the 1999 Buick Regal

The contact owns a 1999 Buick Regal. The vehicle was purchased with a faulty transmission. The contact took the vehicle to the dealer and they stated that the transmission had previously been replaced prior to him purchasing the vehicle. Four years later, the transmission failed again and causes the vehicle to jerk while in first and second gears. Lately, the vehicle has become difficult to drive due to the jerking and slipping. The current and failure mileages were 120,000.