01 LC. sounds like the canister is the the engine bay. my gas smell is DS in the back. Now that I think about it, the smell is worse when the tank is full.
I am having this issue.. 2000 LC100. smell of gas, faint, but there, near wheel well and by gas door, hard to detect exactly where. I have no rust. just an old truck.
Same problem with my 00 LX. I'm guessing all my rust has something to do with it. The fill and return lines are pretty corroded and could be a potential leak source.