that TSB refers to lurching and clunk I do not think that is what OP is referring to
"I've noticed twice now that if I'm driving, and get off the gas, and then quickly get back on the gas, I'm getting a kinda loud bang from my rear end.
It's happened twice within a two month time period, and each time it's the same situation."
I filled up last night and felt the Bang / thud in the drivers seat upon stop and go traffic. One home stop and start on the driveway, I'm sure it the float in the tank