2017 BUICK ENVISION Fuelpropulsion System Problems

At 15,238 miles I was at gas station to fill up vehicle only to discover the fuel filler flap was broken and could not get gas nozzle in vehicle for fill up. Immediately had my mechanic look at it and they were able to repair it. They were able to reattach spring but could not attach sealing plate without a disassemble. Had to replace the fuel neck assembly. No warning lights had come on dash for gas vapor, or other things. I have pictures of mileage and broken fuel filler cap. This could have been disastrous if I was in some small town that could not get parts or had run out of gas somewhere or if gas vapors started leaking.

For 6 months the vehicle has had the following problems: 1. Car automatically shutting down(unresolved) 2 steering column, wheel locking up(resolved at this time) 3. Interior and panel lights flashing when car shutting down ( unresolved) 4. When applying pressure to gas pedal engine automatically shuts down (unresolved) 5. Check engine light stays on Vehicle has been taken to dealership shop 6 times in the past 6 months. There has not been total resolve especially the fact that the car shuts down when I am driving. The car has multiple warranties. This is a very dangerous situation. I would appreciate your help