Ok I have a 02 dakota. It is a 4.7 with an auto trans, and has codes for both large and small evap leak. I have checked all the hoses from the front of the truck up the frame rail to the canister and none seem to be damaged. Anything else i could troubleshoot before i bring it to the shop and get charged a ridiclous amount for nothing. Also im not sure if this related but I have a bunch of wires and lines underneath the truck that seem to be cut or ripped and tied up to the frame. I bought it like this and none of them affect the performance and fucntion of the truck and they seem very odd. They run over the gas tank and i cant tell where they originated from. The truck did have a plow and trailer hitch installed in it so im thinked someone hacked the wiring from one of those two.