The wife came home the other day, and her envoy smelled of gas bad. She filled her tank up. I crawled under the envoy to find gas leaking from the top middle of the tank, assuming that is were the sending unit is. I heard threw the grape vine that there is a recall on this? I don't know? If so I will take it to the dealer to fix. If not I know I have to drop the tank, but is there seal and a lock ring the wrots out or is the whole pump and sender bad and need replaced. I had an old ford f150 with this problem and the only thing I had todo was replace a lock ring and gasket. I live in the wonderful salt belt, so that does not help me much.