hi i am shannon i will help on this issue
to help i will need info on your problem
like year, make, model
what the gas gauge is doing
if you have worked with a different expert you can ask him a fallow on question by clicking on
(my question) at the top right.
then ask a fallow on question he should respond.
if you want me to answer please provide the requested info .thanks shannon
i found a little more info but its for a 2010 but could apply to a 2012. it looks like you could have a split tank that holds fuel in two places because there are two fuel level senders. or it could just be they have two just to back each other up. this would make adjusting them very difficult.hear is the diagram i found.