Our 2005 Caravan began having an issue a couple of days ago after a vacation through Wyoming and Colorado. When I try to pump gas, I can only pump a little at a time and it shuts the pump off. I had the same problem a few years ago with a Hyundai Accent we had. The issue with that car turned out to be the charcoal canister. I have fueled up at two different stations and had the same issue. Anyone else had a similar issue and know what the problem could be?