Other Fuel System Hoses Lines/piping, And Fittings problems of the 2015 Chevrolet Corvette

When refueling, tank filler pipe accepts fuel only very slowly. Several different gas station pumps were tried, all kept clicking off every 3 seconds (as if tank was full). Tank eventually took an additional 7 or 8 gallons, but it took 8 or 10 minutes to accomplish that.

I have a 2015 Corvette stingray with 35k miles. The vehicle has been to the dealership 2 times already once at 11k miles and second time at 22k miles where the car should shudder while cruising at low speeds. Also in the morning during a cold start when I would shift the car from park into reverse then the car would do a hard shift. Twice the dealership changed the fluid in the transmission and rebuilt the entire transmission since the car was under warranty. But my car's extended warranty expired on 03/01/20, in 06/01/20 the issue came back. Now gm is refusing to take responsibility to fix the vehicle. When refueling, tank filler pipe accepts fuel only very slowly. Several different gas station pumps were tried, all kept clicking off every 3 seconds (as if tank was full). Tank was empty to take in several more gallons of fuel.