Bad Gas Leak After Filling Up 07 Silverado Classic

[Aaron Lieber]

Hey Everyone so yesterday after filling up my tank on my 07 Silverado 1500 Classic V6 to almost full I noticed gas leaking from under my truck pretty badly on the right side of the gas tank. Only happens when the truck is on.
I recently have replaced the gas lines that go to the engine. Since there was a leak there prior and it stopped leaking gas for about 3 months. For a couple weeks now my truck has smelled like gas when you walk around it and also noticed it felt like the truck was struggling to start everytime i get in it but there was no Check Engine light and were no leaks until now when I refilled the tank.
Ill attach a video of were it seems the leaking is coming from. It is leaking on the passenger side of the tank towards the front half of the gas tank. Any help/advice is appreciated, Thanks.

 

https://photos.app.goo.gl/ejGyfnc2DoX2NcBD8

[stevejones]

Something up on top of the tank where the business end of the fuel pump starts is ****ered.  Pull the bed & see what you find!

[riverbanks]

The vent line most likely,and second problem,hard start, probably a defective purge valve,stuck open from canister debris