2thousandbowtieC1500

Okay so I tried topping off my 2000 Chevy Suburban, little did I know I wasn't suppose to, not one minute later the fuel began to spill right back out of the bottom of the cab. I've done some reading and found maybe it could be that the purge valve failed to open or close and maybe it could that the fuel ruined my vapor canister as well. I'm still able to drive my truck, but it kinda gives me trouble accelerating sometimes. I think I located the vapor canister near the actual gas tank itself. should I be looking for anything/or hearing for anything???...Need some guidance ladies and gents, any ideas???