Well after a week of tryin to figure out what was causing my evap codes on my blazer i finally got it fixed..with one week past inspection expiration..whew..I had checked every line tried to find enough info on it the system to understand it. I pressure tested my tank, double checked all lines , even lubed all o ring fittings . Come to find out it was actually the fuel tank pressure sensor on top the tank.Was around 40 bucks at autozone. I never been big on throwing parts on a car to fix it but i was to that point.One code was the p0440 and i actually dont remember what the other was but just wanted to broadcast that i fixed it and what did fix it.Woot!!Now as long as the autozone sensor lasts... i will bo good lol

 

Glad to hear it did the trick for you. Evap codes can sometimes be gremlins.