2000 Pontiac Grand Prix lighting problems

This vehicle has had 2 ground wiring shorting out at engine repaired, a leaking gas tank replaced,it has loss power on me 7 times to this date, the heater blower motor malfunctioned, the passenger seat belt has malfunctioned, the headlights flicker, it has had a miss fire on all 6 cylinders twice, a spark plug, the coil pack, & a spark plug wire quit at the same time tha brake pedal has been going all the way to the floor every since I bought the car, the trip computer has malfunctioned twice etc.

Tl* the contact owns a 2000 pontiac grand prix. The contact stated that while driving 35 MPH the interior lights illuminated independently. Also, the contact mentioned that the key became lodged in the ignition switch preventing him from turning the vehicle off. The vehicle was not taken to the dealer. The manufacturer was not made aware of the failure. The vehicle was not repaired. The failure mileage was 130,000 and the current mileage was 138,000.