2006 express cutaway canister vent location

[Kcalif]

I just pulled a 446 code and think it could be caused by plugged line or the vent valve. However i cannot seem to locate it. I thought it would be in front of the gas tank. There’s a motorhome box on the chassis making it difficult to work under it.

thanks in advance for your suggestions 

[Kcalif]

Never mind. Found it under cab! They must have relocated it or the Haynes manual is incorrect as it mentions it is in front of gas tank. I guess they could be correct as it is 10 feet forward of tank! Also noticed the gas cap seems a bit loose. It was replaced a few months back and perhaps they sold me the incorrect one. I'll look for a delco or stant replacement.