Every time I try to put gas in my 03 xtreme, I can only put a few cents worth of gas in at a time. It takes 10 minutes or more to get $5 worth of gas. I've change the tank vent canister, and the filler hose. Does anyone have any idea what it could be ? There's a box behind the rear wheel on driver side that fuel lines? go into. Wat is this box and can it be replaced ?

​​​​​